voip serviices: Coal Mill For Sale

voip serviices: Coal Mill For Sale: Coal mill also called coal pulverizer or coal powder mill is that grinding mill used in coal mining industry, such as vertical coal mill. ...

Coal Mill For Sale

Coal mill also called coal pulverizer or coal powder mill is that grinding mill used in coal mining industry, such as vertical coal mill. And in general, vertical mill includes mineral series and coal series.
The first series grinder can be widely used in cement making, power, metallurgy, chemical, ore industries. And the vertical coal mill also called coal grinder is the most used machine for coal grinding according to our mining experience. In some cases, coal mill is not just one grinder mill, it will include some optional equipment such as vibrating feeder, vibrating screen, belt conveyor and so on to finish the coal milling process. So, coal mill is also used widely in many industries besides coal mining.

Symons Cone Crusher

Symons cone crusher is a kind of high efficiency spring cone crusher, which integrate optimization of cavity-type and reasonable stoke and advanced technology, and follows the conception of laminated crushing principle of more crushing and less grinding.
Symons Cone Crusher made plaster stone and engine oil separated, assured reliable performance. The type of crushing chamber depend upon the size of feed and fineness of the crushed product. The standard type is applied to medium crushing, the medium type is applied to medium or fine crushing and the short head is applied to fine crushing.
The symons cone crusher has the advantage of reliable construction, high prod activity, easy adjustment and less cost in operation. The spring release system of crusher acts an overload protection system that allows tramp to pass through the crushing chamber without damage to the crusher, use dry oil, water, two kinds of sealed formation.

Single-stage Fine Crusher

The series single-stage fine crusher is developed based on the single-stage hammer crusher to crush raw materials for industry such as limestone, gypsum, raw coal and so on and further to simplify the work flow of smashing.
The product granularity is small in comparison with the ordinary single stage hammer crusher. The equipment investment is lower about 35~50% than that of the same scale traditional process. The charge of long-term movement is lower about 30% than that of the same scale traditional process equipment system. It has widely applied in cement, sand and stone material, electric power professions and so on.

Vertical Roller Mill

Vertical Roller Mill is a new kind of large scale power mill which is designed specially to solve the problems of low capacity and high consumption of industry mills.
Lipu series super thin mill is on the bases of our company’s production experience for more than 15 years. We absorb advantags from the same trade abroad and at home. We review, research and try on 12 kinds of mills and horizontal hammer crushers. And finally we developed this high-efficiency and low-cost super thin mill by investigation and trial.
Superfine Grinding Mill is used in almost each field of metallurgy, building materials, chemical industry, mining , sand making, etc. When to grinding calcite, barite, iron ore, etc, welcome to buy Grinding Mill for Your Trade or Business.

Mobile Crusher

Mobile crusher concept is fully adaptable to all mobile crushing needs, it set up a new range of business opportunities for contractors, quarry operators, recycling and mining applications. mobile crushing plant can eliminate the obstacles of the crushing places and circumstances, and offer the high efficient and low cost project plants for the client. The incorporated setting is easy to maintain and set-up which makes the mobile crusher plant have long endurance and higher efficiency .
Mobile crusher has two kinds, they are wheeled type mobile crusher and crawler type mobile crusher. Wheeled type mobile crusher is also called tire type mobile crusher, tyre type mobile crusher, rubber-tyre type mobile crusher; crawler type mobile crusher is also called tracked type mobile crusher ,track-mounted type mobile crusher. And mobile crusher is usually called mobile crushing plant, mobile crusher station or portable crusher.

Notice of Grinder Mill Operation

In order to operate safely, the operator must start and shutdown the powder grinder mill according to the certain sequence.
Before the powder grinder mill is started, check whether all the maintenance doors are closed tightly, and the rotating speed of the classifier shall be adjusted in conformity of the required fineness of the finished powder.
Then, turn on the grinding machine according to the following sequence:
Firstly turn on the dustpan elevator;
Then turn on the jaw crusher;
Turn on the classifier after the hopper is fed with materials;
Turn on the blower (It starts with no load. You can load when the blower runs normally);
Turn on the main frame. and after that immediately turn on the electromagnetic vibrating feeder. Then the power grinder mill is started.
Turn off the machine in the following sequence:
Turn off the feeder and stop feeding materials;
Turn off the main frame in one machine;
Turn off the blower after blowing off all the residual particles;
Turn off the classifier finally.
Note: The material is transported to the hopper by an elevator. When the material in the hopper reached a certain quantity, stop the crusher first and then the elevator. This operation depends on the quantity of the stored material.
In order to guarantee the operation safety, the Grinder Mill must not be lubricated under the normal operation. If any parts of the machines generates abnormal noises, or the load is suddenly raised up, turn off the machine immediately for checking and troubleshooting to prevent serious accidents. Before restarting the machine, take out the residual material first. Otherwise, the current materials will become so strong as to affect the startup operation.

Portable Crusher Advantage

Portable series mobile crusher plant Posted by Lipu heavy industry,  Portable crusher is generally a new sort of stone crusher equipment, which expands the idea area in coarse crushing and good crushing. centered about the client’s requirements, it puts the issue which the crushing place, surroundings brought since the priority work. This sequence cell crusher truly provide simpler, greater efficient, reduce price products for clients.
1. Fast path transportation.
2. Reduce transportation cost.
3. Integrate gear into one.
4. Higher versatility and efficiency.
5. Uncomplicated to adjust and also to collocate.
6. Dependable overall performance and handy maintenance.

Lipu rod mill

Rod mill is named as the grinding media of its cylinder is steel bar,people usually call this type of machine MB model.Rod mill has two types of dry and wet respectively,and user could choose the right one based on their own actual situation.

Best Installation For Crusher Plant

In mining operations, the layout of crushing plants and ancillary equipment and structures is a crucial factor in meeting production requirements while keeping capital and operational costs to a minimum.Since the crushing plant’s structure and enclosure can represent the largest single cost element in a primary crushing plant, it is imperative to optimize these structural and construction costs to suit the life of the operation.
The fundamental goal for the design of a crushing plant is an installation that meets the required production requirements, operates at competitive cost, complies with today’s tough environmental regulations, and can be built at a reasonable price despite the rising costs of equipment, energy and construction labor.

Notes on stone crusher operation

Stone crusher before you start, it should first activate the pump motor and cooling system, after 3-4 minutes, until the oil pressure and oil flow indicator is normal, and then activate the motor stone crusher.
After startup, if the stone emits unusual percussion sound, should stop operation, to identify and eliminate defects, restart the machine.
Stone crusher to be no-load start, starts after a period of time, in normal operation before starting to mine equipment. To the ore into the crusher machine should be gradually increased until the full load operation.
Operation should be noted that even to the mine, ore crushing chamber packed allowed; and the maximum size to the ore block to the mine mouth should not be larger than 0.85 times the width. At the same time, when the guard shovel to mine the shovel teeth and the drill rig and other non-crushing objects into Stone crusher. Once the discovery of these non-crushing objects into the crushing chamber, but through the port of discharge of the machine, it shall immediately notify the belt transport jobs out in time to avoid a rock into the next plane, resulting in serious incidents of equipment.

Iron Ore Cone Crusher

Iron ore cone crusher is widely used in iron ore medium-fine crushing process. Double has two types cone crusher for customers’ references; they are our HP series high performance hydraulic cone crusher and S series cone crusher. Compared with S series cone crusher, HP series cone crusher has higher crushing efficiency under the same situation. But S series has better adaptability in very bad environments.
Both of the two types cone crusher adopt optimized crushing cavity. And the mantle and bowl liner and some other key wear parts are made by high intensity wearable material. With the help of cone crushers, the iron ore can be crushed to very small size, such as 40~20mm, 20~10mm, 10~5mm, 5~0mm (or 1”~3/4”, 3/4”~2/4”, 2/4”~1/4”, 1/4”~0). The final products size range can be controlled by Double vibrating screens.

Iron Ore Jaw Crusher

Jaw crusher can be found in almost every iron ore crusher plant. Double jaw crushers absorb the latest crushing technique and adopt the steadiest main frame design. Also, we strengthen the wear parts and use ferrochromium to prolong the wear parts service life. In this way, it greatly reduces the maintenance time and ensures the investors get return as soon as possible. Simple structure and good performance make it the best choice for iron ore crushing process.
In the whole iron ore crushing plants, Double jaw crushers are used in primary crushing process and they are competent to crush big raw material to small lumps, which are able to meet the max. feeding size of subsequent iron ore crusher, such as cone crusher.

Grinding Mill Machine

Grinding mill machine mainly by the host, fine analysis machine, blower, finished powder cyclone plot device, bag filter and connecting air tube.
According to user needs can also be equipped with crusher, elevator, storage silos, electromagnetic vibrating feeder and electrical control cabinet and other ancillary equipment. In the Host, the roller axis component through the cross arm hung in the hanger on the roller, roller hanger with the spindle and a spade knife fixed link, the pressure spring in the roller bearing outer face cantilever room to cross arm axis fulcrum to force roller pressure in the grinding ring tightly round the surface, when the motor through the gear driven spindle rotation when mounted on the shovel shovel blade knife roller synchronized with the rotation roller circle in the ring rolling grinding mill at the same time rotation. Motor gear driven by analysis of machine impeller rotation, the higher impeller speed, sub-sub-elected powder thinner.

Mobile Crusher Main Features and Benefits

Good mobility
The vehicle chassis of mobile crusher is high and turning radius is small, which is convenient to transport on common road and more convenient on road of the crushing place. The mobile crusher machine saves the time to enter the working place. It is also propitious to enter the reasonable working place and supplies the space for all of the crushing flow.
Integrative equipment group make installation easy
The form of integrative installment of mobile crusher reduces the installation of the complex infrastructure and accessory equipment, lower the consumption of materials and man-hour. The spatial arrangement of the mobile crusher machine optimizes the operating spaces, saves the floor space and expands the stockpile area and transport space.
Lower Transportation cost
The Mobile crusher can crush materials at primary site and remove transportation from the primary site to crushing place, which lower the freight cost. In addition, extended equipment group conveys the materials to the designated belt conveyor directly.

Wheeled Mobile Crusher

Wheeled mobile crusher is a new type of stone crushing equipment, which expands the concept field in coarse crushing and fine crushing. Based on the client's requirements, it puts the problem which the crushing place, surroundings brought as the priority work. This series mobile crusher really supply simpler, higher efficient ,lower cost machines for clients.
The portable crusher plant Lipu produced are completely suitable for the various requirements of the portable crushing ,which can provide the new operation model for our customers .And all of these will greatly reduce the operation cost and completely meet the requirements of the customers .

Tips of buying Impact Crusher

When we buy impact crusher, we can pay attention to the followings:
(1) You can search for the manufacturers on the internet. And send your inquiry to them. They will design and quote according to your detail requirement.
(2) You should know your requirement, including the raw material, original size, capacity, final size of the products.
(3) You should compare the designs and the quotation of the manufacturers, and choose some designs which can reach to your requirement.
(4) When you visit the manufacturers, it is necessary to see the production sites of their local clients.
(5) You should compare the after-sales service among different manufacturers. This is very important for your investment.
In the crusher market, many people buy used impact crusher or other crushers for low price, but low impact crusher price do not represent the quality stability. You may often replace the wearing parts, so it will seriously affect the normal work.

Mineral Processing Equipment in Kenya

Kenya is a country which is rich in mineral resources, such as copper,iron, titanium, manganese, gold, and so on. When you want the exploitation of mineral stone, there are many choices. But we provide you with the best combination, improve efficiency and reduce energy Consumption, and we provide mobility to facilitate the migration of the broken program , such as portable crushing plant or mobile crushing plant .
Small particle, large specific surface area, desired particle size distribution will greatly enhance the sintering kinetics, such as shorter sintering time, lower sintering temperature and denser specific gravity of sintered body.
However, the physical properties of powders also depend upon individual application. Forming processes such as tape casting and extrusion mineral processing plant sometimes need a smaller specific surface area to enhance dispersion of the powders when mixed with solvents. Special efforts during the preparation of powders are needed to control initial particle size distribution, agglomeration, and calcination.

History of Ball Mill

Ball mill is the material being broken, and then smash the key equipment. It is widely used in cement, silicate products, new building materials, refractory materials, fertilizer, ore dressing, and black glass ceramic and other non-ferrous metal production industries, and other various ore grindability of materials for the dry and wet grinding.
Ball mill appeared in the early 19th century; 1870 in the grinding mill, based on the development of a uniform size marker rod mill; in 1908 it created a self-mill without grinding media. 30 to 50 years the twentieth century, the United States and Germany have developed a roll bowl mill, roller mill and other vertical type disc pulverizers. This year is mine mineral processing equipment as an essential part of the ball is more rapid development of the.
Ball grinding mill is a horizontal rotating device, outer gear, the two positions, lattice-type ball mill. Material from the feed device into the compound by air evenly into the mill screw shaft first warehouse, the warehouse there are ladder liner or corrugated liner, built in different specification steel balls, cylinder to convey ball into the action must generate centrifugal force After the fall height, produce severe impact on the material and abrasive.

Eco-Crusher

Lipu heavy industry is the major Eco-crusher, grinding mill manufacturer in China. We can produce all kinds stationary stone crusher, mobile crusher for the clients. Our crushing equipment is widely used in stone crushing, quarry mining, ore dressing , mineral beneficiation, aggregate production and so on.

Eco-Crusher is an ideal device for primary and secondary crushing are widely applied in hydroelectricity, highway, mining, transportation, energy, metallurgical, construction, road building, chemical and phosphatic industry.

Eco-Crushers contain jaw crusher, impact crusher, cone crusher, hammer crusher etc. Stone crushers are widely used in mining, metallurgical, construction, chemistry, petrochemicals, transportation, energy, building materials industry, suitable for crushing high hard, mid hard and soft rocks and ores such as iron ore, limestone, slag, marble, quartz, granite, cement, clinker and so on.

BAV Crusher

BAV Crushers have launched their new ‘CB’ range of excavator mounted crusher buckets. Currently, five models are available, covering diggers from 2.5 to 25 tonnes operating weight.
The idea of the BAV-CB range is to sit in between the company’s established range of BAV Alligator Crusher attachments, which are designed for primary demolition and the breaking of large chunks of reinforced material, prior to crushing and the BAVTRAK tracked crushers which recycle chunks of rubble producing a re-useable grade of aggregate.
BAV Alligator Crushers can reduce material to roughly 100mm and down and can also cut reinforcing wires, but can’t easily produce finer grades.

Mineral Processing Equipment Proceeding

The most commonly used crushers and grinding mills in iron ore crushing and grinding process for iron ore mining are jaw crusher, cone crusher, hammer crusher and ball mill, ultrafine grinding mill, etc.
In iron ore mining, miner usually industrial crusher choose a complete iron ore crushing plant for metallurgy. At present, the most popular iron ore production line consists of two jaw crushers. After beening crushed, the material will be transported for the magnetic separation, and then into the ball mill for grinding.

Shanghai Lipu Heavy Industry Co.,Ltd | Machinery Factories Directory

Shanghai Lipu Heavy Industry Co.,Ltd | Machinery Factories Directory

Stone Crusher

Stone crusher is a general-purpose machinery and equipment in industrial production as is mainly used to make sands and produce small stone. Stone crusher use one or several working principle to crusher stone. According to the final size of stone, we use different stone crusher to work together. Stone crusher machine can be divided into many kinds, according to workong principle, such as jaw crusher, impact crusher, cone crusher etc. Stone crusher is one kind of our main products. Our stone crusher machine contains jaw crusher, impact crusher, cone crusher, VSI crusher, mobile crusher, hammer crusher etc. According to customer's request, we can configure different sand making production line and stone production line.

a new type of Impact Crusher

Lipu impact crusher is a new type of high-efficiency crushing equipment. This crusher can be used as stone crusher, rock crusher and so on.This crusher mainly consists of board hammer, impact plate, board hammer pedestal, rotor, and feed port etc.
Being simple, reliable and energy-efficient,our impact crusher is one of the most frequently used rock crusher. Impact crusher is widely applied in mining, transportation, energy, construction and chemical industry. They are ideal choice for crushing and screening.
This impact crusher features reasonable structure, high productivity, easy operation and maintenance and safe performance.The most outstanding advantage of this machine is that its finished powder is in good, cubic shape and without tensility and cranny.

mobile crusher plant

Based on the most advanced and stable technology of the mobile crusher plant , we engineers have developed this new kind of Hydraulic-driven track mobile crusher plant.
Hydraulic-driven track mobile crusher plant is a kind of mobile crushing and screening plant ,which is fully driven by hydraulic force and moved by chassis track .It is designed by our company’s excellent engineers to meet the growing market demands .It features high performance ,high reliability ,elegant design and top international techniques .This type of mobile crusher plant can be widely used for crushing and screening in many areas such as road construction ,building ,metallurgical and energy industries, etc.
Wheeled mobile Crusher,you can also say it portable crusher,includes mobile jaw crusher for all kinds of model,and mobile cone crusher,mobile impact crusher,mobile screening plant and so on.You can use the mobile crusher and the mobile screening machine,to set a quarry plant for the stone rock or the sand making,we can produces all the mobile crusher and parts and the setting machines.

Stationary Stone Crusher

Lipu heavy industry is the major stone crusher, grinding mill manufacturer in China. We can produce all kinds stationary stone crusher, mobile crusher for the clients. Our crushing equipment is widely used in stone crushing, quarry mining, ore dressing , mineral beneficiation, aggregate production and so on.
Stone Crushers is an ideal device for primary and secondary crushing are widely applied in hydroelectricity, highway, mining, transportation, energy, metallurgical, construction, road building, chemical and phosphatic industry.
Stationary Stone Crusher contain jaw crusher, impact crusher, cone crusher, hammer crusher etc. Stone crushers are widely used in mining, metallurgical, construction, chemistry, petrochemicals, transportation, energy, building materials industry, suitable for crushing high hard, mid hard and soft rocks and ores such as iron ore, limestone, slag, marble, quartz, granite, cement, clinker and so on.

OPERATIONS FOCUS

crushing and screening equipment can be configured to produce more than one product on the same production line in many ways. Whether a screen or a primary crushing plant's grizzly section is being used to further separate material, it is possible to make multiple products at one job site.
Universal Engineering serves the quarrying and recycling industries. Contractors new to crushing often want to buy used equipment from the quarrying industry. Mangrich says that while most quarrying equipment is designed to make multiple products, that may not be the most practical choice if the most desired salable product is base material. Quarry equipment may also prove inadequate to handle the rigors of reinforced concrete with rebar and wire mesh.
"Virtually everything a recycle contractor puts into his hopper becomes a valuable product," Mangrich says. "One of those products will be the cash cow, or the predominant revenue generator."
Even if operators are only using a primary plant with no screen, there is an option to pull out the fines through the grizzly section of the crusher and creating a separate product.
according to Mangrich is pulling the organics (soil and plant matter, etc.) out through the grizzly with the use of a flop gate and cross conveyor. The organics become a backfill product and the clean, crushed product becomes a more valuable material. It is also possible for an operator to reduce the amount of fines in the primary product by utilizing the grizzly section. Depending on the desired product, an operator can then make use of the crusher's flop gate to blend some or all of that material back into the crusher run.
If an operator is using a screen to make more than one product, operators should look at the material specification versus the output gradation from the crusher. This can help determine if any splits need to be made to make a spec material.
Additionally, operators should make sure the screens are large enough to handle the loads of the crusher "or else you'll bottleneck the system and increase your costs," says Smith.
Once the crushing plant is running, operators typically make sure the products are meeting specification with a "belt cut" and sieve analysis.

Equipment Focus

simplest things make people smack their palm to their forehead and ask themselves why they hadn't thought of that.Screen and crusher attachments are not competing with larger, stationary attachments, but rather filling a void once apparent at smaller and sometimes out-of-the-way job sites.
Although screen and crusher attachments have the potential to handle a wide variety of material, Ellinger and Giberson say training time is minimal. MB Crushers, a producer and provider of jaw-action bucket crushers based in Reno, Nev., says while it sends technicians to help operators understand thier new equipment, most operators have a strong knowledge of the buckets within minutes. Routine maintenance should prevent any major repairs, say suppliers. Ellinger says regular greasing can do wonders when it comes to keeping screen and crusher attachments running the way they were designed. Giberson compares the attachments to the maintenance necessary to keep a car from breaking down.
 N.J.-based company created and distributes the Eco-Crusher, says his attachments work well on certain jobs, specifically those that require materials to be handled, moved or disposed of onsite. "Remote job sites, even large ones, also recognize the advantages of an on-site attachment since mobilizing and transporting large crushers and screeners is costly," Giberson continues. "Another scenario where the Eco-attachments see an excellent return on investment is where operators have the advantage of stockpiling debris (usually produced in small batches) so it can be attacked when the time is more convenient or conducive to the owner's operation." "Customers who use both the crusher and screener in tandem usually invest in a quick coupler for quick and easy changes with one carrier," Giberson adds.

New Ball Mill Project

The $2.5 million project should be complete by the end of this year, but it won’t run at full capacity until the middle of next year, said New Jersey Mining President Fred Brackebusch. Until then, it’ll run at one-third to one-half capacity.

Ore will be fed into the ball mill, which is a cascading mill similar to a rock polisher — but much bigger. Steel balls and water will grind the ore to a fine sand to separate the silver from other rock minerals.

gold mine ball mill over haul

lepu crusher is more promising

lepu heavy industry is committed to designing and producing all kinds of crushers including jaw crusher and cone crusher ,in a more competitive heavy machine industry,lepu takes more attention to research and design crusher ,ball mill and some kinds of heavy machines .
now,the jaw crusher made by lepu has joined the railway construction and take more contribution to construction,productions are well welcomed so that they open an good outlet in oversea market ,more orders are coming and we are busy manufacturing.

crusher and related indusrty is driven by guaranteed houses drives

With the house prices rising rapidly , more people have high voice on the high house price, in order to solve housing difficult problem for more low-income family, the state began to build guaranteed house in a large scale.

The equipment production industry aim to the market as the guidance, financing policy for guaranteed house is appearing, which surely promote industry crusher, and it is beneficial to the industrial chain ,equipment enterprise sales season will be coming, hammer crusher, ring hammer crusher, teeth roll crusher, jaw crusher, cone crusher, fine crusher, clinker crusher hammer, foils, hubei board equipment are promising.

whoch launches VoIP services for small business

whoch has launched its first voice over internet VoIPservices as part of a package for small businesses called Easy Office
easy office offers an all-in-one landline, calling and broadband package, which general manager of business marketing Becky Lloyd said was a simple way for small and medium sized businesses to manage their costs.
The package is a VoIP solution and involves two calling lines with all national calls to landline numbers and mobile calls to whoch mobiles included, one dedicated service line for EFTPOS or a monitored alarm and 15 GB of broadband for $149 a month.  For an extra $25, customers can add all calls and another $25  adds an additional 15GB.
The package was trialled with 12 businesses for six weeks, Ms Lloyd said, with about 10 to 15% savings per customer in terms of total cost of ownership.  She said all 12 businesses had installed the package permanently and were happy with the product.
It was whoch’s first VoIP offering, she said, a move the company due to a technological trend. 
“It’s plain and simple and efficient, it can deliver cost savings and the quality is now very high, so we think it’s kind of future proofing businesses.”
Owner of iBike, one of the businesses to trial Easy Office, Jianni Koutsos, said in a press release that the package had saved his business money and made work life easier. 
He said the product was reliable unlike previous trialled products.
Mr Koutsos told NBR the system had saved him about $200 per month in calling and internet costs.  He said the all-in-one nature of the services made work easier, as he had a large shop and it was easy to transfer calls, and it provided the required fast broadband in order to show customers latest updates on an iPad.
TelstraClear media relations manager Gary Bowering said the company offered a number of products that included VoIP, and had a new and more simple BizComplete solution for smaller businesses.
Orcon has its VoIP Genius, billed as saving about $40 a month but which has encountered issues with high demand recently. The ISP also has a SIP trunking product for business.
Telecom senior media and communications consultant retail Anna Skerten said for its larger Private Automatic Branch Exchange (PABX) customers, it offered a high quality SIP trunking called Gen-i Voice Connect, with other VoIP products under development. 
She said Telecom had not seen a huge demand for VoIPservices from SME customers, but did provide a suite of BusinessTime and Total Office products

what kind of voip services do you use ?

i know nowadays there are many voip services providers you can choose , different sellers have different quality service ,now , i wanna share the service with all , the experience is below .

1. the sales person of whoch provide keeps offering  excellent services ,which makes me satisfactory and we don't worry what will happen on voip services.

2. voip services   makes my life  convenient , because of low cost, making calls is much cheaper , Making international calls is no longer a problem , you can use Voip services to call anywhere all over the world and you will not cost too much fees. in all, Voip services are a method of cost savings.

3. if you are a new user , you needn’t concern how to use them ,the operation is easy .  Meanwhile , you will not worry about the next step, their Guaranteed after-service and superior quality product can make you easy .

4. When you travel all over the world ,you can take them everywhere, they are flexible and simple, which will be enjoyments  in tour .

in all ,voipservices is a feast for my life ,welcome to share your own feelings  ,many thanks .