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What are the Differences Between Dry and Wet Type Ball

10/03/2021  The feeder feeds material continuously and evenly, the ground material will be continuously discharged from the ball mill. The wet ball mill can be divided into three types according to the motion characteristics: a simple swing type wet ball mill, a complex swing type wet ball mill, and a hybrid swing type wet ball mill. Applicable materials 1. Dry type10/03/2021  The feeder feeds material continuously and evenly, the ground material will be continuously discharged from the ball mill. The wet ball mill can be divided into three types according to the motion characteristics: a simple swing type wet ball mill, a complex swing type wet ball mill, and a hybrid swing type wet ball mill. Applicable materials 1. Dry type

Wet Ball Milling Vs Dry Ball Milling Orbis Machinery, LLC.

27/06/2019  The power to drive a wet ball mill is said to be 30% lesser than that of a similar dry ball mill. Nature Of Materials In the production of some products both wet ball and dry ball milling processes are required. The grinding of the raw mix in a cement plant, can be carried out either wet or dry but because of the nature of the cement can, grinding it has to be carried out dry. Quality The ...27/06/2019  The power to drive a wet ball mill is said to be 30% lesser than that of a similar dry ball mill. Nature Of Materials In the production of some products both wet ball and dry ball milling processes are required. The grinding of the raw mix in a cement plant, can be carried out either wet or dry but because of the nature of the cement can, grinding it has to be carried out dry. Quality The ...

wet-ball milling - Traduction française – Linguee

hydrolyzing suitable metal alkoxide (s), washing, drying, granulating and calcin ing, wet ball milling the calcined metal oxide (s) powder, compacting the ball-milled powder into at least one powder compact, and low-temperature sintering the said at least one powder compact into a ceramic body, CHARACTERIZED BY conducting the said wet ball milling ...hydrolyzing suitable metal alkoxide (s), washing, drying, granulating and calcin ing, wet ball milling the calcined metal oxide (s) powder, compacting the ball-milled powder into at least one powder compact, and low-temperature sintering the said at least one powder compact into a ceramic body, CHARACTERIZED BY conducting the said wet ball milling ...

Ball Mill Grinding - William Boulton

Our ball mill grinding products apply the ancient principle of ball grinding to the industrial needs of the modern world. Many different industries can benefit from the grinding action that these mills offer: they are suitable for both dry and wet grinding as well as cryogenic grinding, and are commonly used for mixing or grinding chemicals, ores, paints and ceramic materials.Our ball mill grinding products apply the ancient principle of ball grinding to the industrial needs of the modern world. Many different industries can benefit from the grinding action that these mills offer: they are suitable for both dry and wet grinding as well as cryogenic grinding, and are commonly used for mixing or grinding chemicals, ores, paints and ceramic materials.

ball mill wet grinding, ball mill wet grinding Suppliers ...

Grinding Mill Wet Ball Ball Mill For Grinding Factory Price Quartz Limestone Coal Ceramic Cement Dry Grinding Mill Machine Industrial Wet Gold Ore Mining Ball Mill For Grinding Mill Wet Ball Ball Mill For Grinding Factory Price Quartz Limestone Coal Ceramic Cement Dry Grinding Mill Machine Industrial Wet Gold Ore Mining Ball Mill For

Grinding Media Balls Manufacturing - metal mould ...

Grinding Balls Metal Mould is the most welcomed method to produce casting mill balls. There are more than 300 hundred foundries producing mill balls by this mode. It consists of grinding balls metal mold and pattern, these two are used together. Using the pattern to fill the mixed common sand at the pouring gate of ball mold. The ball mould is made of Grey Iron (HT200 Material), and the high-temperature molten iron contact with the inner side of mould Grinding Balls Metal Mould is the most welcomed method to produce casting mill balls. There are more than 300 hundred foundries producing mill balls by this mode. It consists of grinding balls metal mold and pattern, these two are used together. Using the pattern to fill the mixed common sand at the pouring gate of ball mold. The ball mould is made of Grey Iron (HT200 Material), and the high-temperature molten iron contact with the inner side of mould

Wet Grinding VS Dry Ball Mill Grinding - 911 Metallurgist

03/07/2017  Batch Ball Mill Grinding. Capacities and efficiencies in wet and dry ball milling at different speeds and ore charges have been discussed in the foregoing pages. The results are summarized in table 16, which shows that in both capacity and efficiency grinding was at its best with small ore charges and high speed. Likewise, in wet grinding the capacity was best with a small ore charge at high 03/07/2017  Batch Ball Mill Grinding. Capacities and efficiencies in wet and dry ball milling at different speeds and ore charges have been discussed in the foregoing pages. The results are summarized in table 16, which shows that in both capacity and efficiency grinding was at its best with small ore charges and high speed. Likewise, in wet grinding the capacity was best with a small ore charge at high

China Grinding Ball Mould, Grinding Ball Mould ...

Grinding Ball Mould manufacturers suppliers. Recommended product from this supplier. Grinding Media Steel Ball Mould (dia20mm-150mm) FOB Price: US $ 500-1000 / Piece. Min. Order: 30 Pieces. Type: Ordinary Sand Casting. Application: Grinding Media. Grinding Ball Mould manufacturers suppliers. Recommended product from this supplier. Grinding Media Steel Ball Mould (dia20mm-150mm) FOB Price: US $ 500-1000 / Piece. Min. Order: 30 Pieces. Type: Ordinary Sand Casting. Application: Grinding Media.

Ball Mill Maintenance Installation Procedure

19/10/2016  We recommend a mixture of 1:2:3 for ball mill and rod mill foundations. The proper water to sand ratio should be carefully regulated since excess water increases the shrinkage in the concrete and lends to weaken it even more than a corresponding increase in the aggregate. Between 5½ to 8½ gallons of water to a sack of cement is usually recommended, the lower amount to be used where 19/10/2016  We recommend a mixture of 1:2:3 for ball mill and rod mill foundations. The proper water to sand ratio should be carefully regulated since excess water increases the shrinkage in the concrete and lends to weaken it even more than a corresponding increase in the aggregate. Between 5½ to 8½ gallons of water to a sack of cement is usually recommended, the lower amount to be used where

Do Moth Balls Prevent Mold? Hunker

Moth balls will absorb moisture, which will prevent mold and mildew from growing and thriving. However, the risks with moth ball usage outweigh any positive aspects that they may have. Instead of using moth balls to help prevent mold and mildew, choose a safer more natural option that will not cause health complications to you or your family.Moth balls will absorb moisture, which will prevent mold and mildew from growing and thriving. However, the risks with moth ball usage outweigh any positive aspects that they may have. Instead of using moth balls to help prevent mold and mildew, choose a safer more natural option that will not cause health complications to you or your family.

Wet Ball Milling Vs Dry Ball Milling Orbis Machinery,

27/06/2019  The power to drive a wet ball mill is said to be 30% lesser than that of a similar dry ball mill. Nature Of Materials In the production of some products both wet ball and dry ball milling processes are required. The grinding of the raw mix in a cement plant, can be carried out either wet 27/06/2019  The power to drive a wet ball mill is said to be 30% lesser than that of a similar dry ball mill. Nature Of Materials In the production of some products both wet ball and dry ball milling processes are required. The grinding of the raw mix in a cement plant, can be carried out either wet

Effect of ball size and powder loading on the milling ...

01/12/2013  1. Introduction. Wet ball mill is one of the most predominantly used method for the purpose of mixing and grinding of raw materials in laboratories and industry , , .The ball mill process is very complicated process governed by many parameters, such as ball size, ball shape, ball filling, slurry loading (with respect to ball amount), powder loading with respect to the amount of total slurry ...01/12/2013  1. Introduction. Wet ball mill is one of the most predominantly used method for the purpose of mixing and grinding of raw materials in laboratories and industry , , .The ball mill process is very complicated process governed by many parameters, such as ball size, ball shape, ball filling, slurry loading (with respect to ball amount), powder loading with respect to the amount of total slurry ...

Ball Mill Loading - Wet Milling - Paul O. Abbe

Ball Mill Loading (wet milling) When charging a ball mill, ceramic lined mill, pebble mill, jar mill or laboratory jar use on a jar rolling mill it is important to have the correct amount of media and correct amount of product. Charging a Wet Mill – The general operation of a grinding mill is to have the product impacted between the balls as they tumble. Unlike dry milling, wet milling is ...Ball Mill Loading (wet milling) When charging a ball mill, ceramic lined mill, pebble mill, jar mill or laboratory jar use on a jar rolling mill it is important to have the correct amount of media and correct amount of product. Charging a Wet Mill – The general operation of a grinding mill is to have the product impacted between the balls as they tumble. Unlike dry milling, wet milling is ...

Ball Mills - an overview ScienceDirect Topics

Generally, filling the mill by balls must not exceed 30–35% of its volume. Productivity of ball mills depends on drum diameter and the relation of drum diameter and length. Optimum ratio between length L and diameter D, L:D is, usually, accepted in the range 1.56–1.64. The mill productivity also depends on many other factors: physical-chemical properties of feed material, filling of the ...Generally, filling the mill by balls must not exceed 30–35% of its volume. Productivity of ball mills depends on drum diameter and the relation of drum diameter and length. Optimum ratio between length L and diameter D, L:D is, usually, accepted in the range 1.56–1.64. The mill productivity also depends on many other factors: physical-chemical properties of feed material, filling of the ...

wet-ball milling - Traduction française – Linguee

effected in a cycle by returning to the mill the whole of the product leaving the mill as often as is necessary to obtain the end product with the desired specific surface area, and in that the solids concentration is less than or equal to 24% by weight throughout the entire period of wet grinding, and in that the grinding is optionally carried out in the presence of dispersing agents.effected in a cycle by returning to the mill the whole of the product leaving the mill as often as is necessary to obtain the end product with the desired specific surface area, and in that the solids concentration is less than or equal to 24% by weight throughout the entire period of wet grinding, and in that the grinding is optionally carried out in the presence of dispersing agents.

Ball Mill Ball Mills Wet Dry Grinding DOVE

DOVE supplies various types and sizes of Ball Mill Balls, including; Cast Iron steel Balls, Forged grinding steel balls, High Chrome cast steel bars, with surface hardness of 60-68 HRC. DOVE Ball Mills achieves size reduction by impact and attrition. When the cylinder rotates, the balls are dragged to almost the top of the shell, and from there, they fall unto the material, which lead to the ...DOVE supplies various types and sizes of Ball Mill Balls, including; Cast Iron steel Balls, Forged grinding steel balls, High Chrome cast steel bars, with surface hardness of 60-68 HRC. DOVE Ball Mills achieves size reduction by impact and attrition. When the cylinder rotates, the balls are dragged to almost the top of the shell, and from there, they fall unto the material, which lead to the ...

Ball mills - Metso Outotec

With more than 100 years of experience in ball mill technology, Metso Outotec ball mills are designed for long life and minimum maintenance. They grind ores and other materials typically to 35 mesh or finer in a variety of applications, both in open or closed circuits.With more than 100 years of experience in ball mill technology, Metso Outotec ball mills are designed for long life and minimum maintenance. They grind ores and other materials typically to 35 mesh or finer in a variety of applications, both in open or closed circuits.

China Grinding Ball Mould, Grinding Ball Mould ...

China Grinding Ball Mould manufacturers - Select 2021 high quality Grinding Ball Mould products in best price from certified Chinese Machining, Metal Part China Grinding Ball Mould manufacturers - Select 2021 high quality Grinding Ball Mould products in best price from certified Chinese Machining, Metal Part

TECHNICAL NOTES 8 GRINDING R. P. King

Grate discharge Wet Overflow discharge Wet Figure 8.5 Effect of mill filling on power draft for ball mills. The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 8.4 The speed of rotation of the mill influences the power draft through ...Grate discharge Wet Overflow discharge Wet Figure 8.5 Effect of mill filling on power draft for ball mills. The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 8.4 The speed of rotation of the mill influences the power draft through ...

Do Moth Balls Prevent Mold? Hunker

Moth balls will absorb moisture, which will prevent mold and mildew from growing and thriving. However, the risks with moth ball usage outweigh any positive aspects that they may have. Instead of using moth balls to help prevent mold and mildew, choose a safer more natural option that will not cause health complications to you or your family.Moth balls will absorb moisture, which will prevent mold and mildew from growing and thriving. However, the risks with moth ball usage outweigh any positive aspects that they may have. Instead of using moth balls to help prevent mold and mildew, choose a safer more natural option that will not cause health complications to you or your family.

Ball Mill Loading - Wet Milling - Paul O. Abbe

Ball Mill Loading (wet milling) When charging a ball mill, ceramic lined mill, pebble mill, jar mill or laboratory jar use on a jar rolling mill it is important to have the correct amount of media and correct amount of product. Charging a Wet Mill – The general operation of a grinding mill is to have the product impacted between the balls as they tumble. Unlike dry milling, wet milling is ...Ball Mill Loading (wet milling) When charging a ball mill, ceramic lined mill, pebble mill, jar mill or laboratory jar use on a jar rolling mill it is important to have the correct amount of media and correct amount of product. Charging a Wet Mill – The general operation of a grinding mill is to have the product impacted between the balls as they tumble. Unlike dry milling, wet milling is ...

Wet Grid Ball Mill - Rhyther Mining

Wet Grid ball mill is mainly used for mixing and grinding materials in two types: dry grinding and wet grinding .It has advantages of fineness uniformity and power saving. The machine uses different types of liner to meet different customer needs. The grinding fineness of material can be controlled by grinding time. The electro-hydraulic machine is auto-coupled and decompressed to reduce the ...Wet Grid ball mill is mainly used for mixing and grinding materials in two types: dry grinding and wet grinding .It has advantages of fineness uniformity and power saving. The machine uses different types of liner to meet different customer needs. The grinding fineness of material can be controlled by grinding time. The electro-hydraulic machine is auto-coupled and decompressed to reduce the ...

Ball Mills - an overview ScienceDirect Topics

Generally, filling the mill by balls must not exceed 30–35% of its volume. Productivity of ball mills depends on drum diameter and the relation of drum diameter and length. Optimum ratio between length L and diameter D, L:D is, usually, accepted in the range 1.56–1.64. The mill productivity also depends on many other factors: physical-chemical properties of feed material, filling of the ...Generally, filling the mill by balls must not exceed 30–35% of its volume. Productivity of ball mills depends on drum diameter and the relation of drum diameter and length. Optimum ratio between length L and diameter D, L:D is, usually, accepted in the range 1.56–1.64. The mill productivity also depends on many other factors: physical-chemical properties of feed material, filling of the ...

Tubular Ball Mills - ScienceDirect

01/01/2016  A 3 × 3 m wet overflow ball mill in open circuit was charged with 38 t of grinding media in the form of 101 mm diameter balls at a density of 7.9 t/m 3. The mill rotated at 21 rpm. The bed porosity of the material to be ground was 35% and the work index of the material 13.7 kWh/t (wet grinding). The feed size was 80% passing 2.0 mm and the final product size expected was 80% passing 75 μm ...01/01/2016  A 3 × 3 m wet overflow ball mill in open circuit was charged with 38 t of grinding media in the form of 101 mm diameter balls at a density of 7.9 t/m 3. The mill rotated at 21 rpm. The bed porosity of the material to be ground was 35% and the work index of the material 13.7 kWh/t (wet grinding). The feed size was 80% passing 2.0 mm and the final product size expected was 80% passing 75 μm ...

how to run wet process ball mill - hotelangelregency

Fig.1 Manhole of batch ball mill • Batch ball mill : The balls as ...Ball mill - WikipediaThe ball mill can grind ores and other materials, wet or dry. There are two kinds of ball mills according to their ways of discharging material: grate type, and overfall type. Many types of grinding media are suitable for use in a ball mill, each material having its own specific properties and ...Fig.1 Manhole of batch ball mill • Batch ball mill : The balls as ...Ball mill - WikipediaThe ball mill can grind ores and other materials, wet or dry. There are two kinds of ball mills according to their ways of discharging material: grate type, and overfall type. Many types of grinding media are suitable for use in a ball mill, each material having its own specific properties and ...

Ball mills - Metso Outotec

With more than 100 years of experience in ball mill technology, Metso Outotec ball mills are designed for long life and minimum maintenance. They grind ores and other materials typically to 35 mesh or finer in a variety of applications, both in open or closed circuits.With more than 100 years of experience in ball mill technology, Metso Outotec ball mills are designed for long life and minimum maintenance. They grind ores and other materials typically to 35 mesh or finer in a variety of applications, both in open or closed circuits.

Ball Milling - an overview ScienceDirect Topics

Ball milling, a shear-force dominant process where the particle size goes on reducing by impact and attrition mainly consists of metallic balls (generally Zirconia (ZrO 2) or steel balls), acting as grinding media and rotating shell to create centrifugal force.In this process, graphite (precursor) was breakdown by randomly striking with grinding media in the rotating shell to create shear and ...Ball milling, a shear-force dominant process where the particle size goes on reducing by impact and attrition mainly consists of metallic balls (generally Zirconia (ZrO 2) or steel balls), acting as grinding media and rotating shell to create centrifugal force.In this process, graphite (precursor) was breakdown by randomly striking with grinding media in the rotating shell to create shear and ...

TECHNICAL NOTES 8 GRINDING R. P. King

Grate discharge Wet Overflow discharge Wet Figure 8.5 Effect of mill filling on power draft for ball mills. The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 8.4 The speed of rotation of the mill influences the power draft through ...Grate discharge Wet Overflow discharge Wet Figure 8.5 Effect of mill filling on power draft for ball mills. The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 8.4 The speed of rotation of the mill influences the power draft through ...

AP-42, CH 11.7: Ceramic Products Manufacturing

Applications for porcelain include artware, ball mill balls, ball mill liners, chemicalware, insulators, and tableware. Technical ceramics include vitreous ceramic whiteware used for such products as electrical insulation, or for chemical, mechanical, structural, or thermal applications. Ceramic products that are made from highly refined natural or synthetic compositions and designed to have ...Applications for porcelain include artware, ball mill balls, ball mill liners, chemicalware, insulators, and tableware. Technical ceramics include vitreous ceramic whiteware used for such products as electrical insulation, or for chemical, mechanical, structural, or thermal applications. Ceramic products that are made from highly refined natural or synthetic compositions and designed to have ...

Ball Mill Loading - Wet Milling - Paul O. Abbe

Ball Mill Loading (wet milling) When charging a ball mill, ceramic lined mill, pebble mill, jar mill or laboratory jar use on a jar rolling mill it is important to have the correct amount of media and correct amount of product. Charging a Wet Mill – The general operation of a grinding mill is to have the product impacted between the balls as they tumble. Unlike dry milling, wet milling is ...Ball Mill Loading (wet milling) When charging a ball mill, ceramic lined mill, pebble mill, jar mill or laboratory jar use on a jar rolling mill it is important to have the correct amount of media and correct amount of product. Charging a Wet Mill – The general operation of a grinding mill is to have the product impacted between the balls as they tumble. Unlike dry milling, wet milling is ...

Ball mills - Metso Outotec

With more than 100 years of experience in ball mill technology, Metso Outotec ball mills are designed for long life and minimum maintenance. They grind ores and other materials typically to 35 mesh or finer in a variety of applications, both in open or closed circuits.With more than 100 years of experience in ball mill technology, Metso Outotec ball mills are designed for long life and minimum maintenance. They grind ores and other materials typically to 35 mesh or finer in a variety of applications, both in open or closed circuits.

Tubular Ball Mills - ScienceDirect

01/01/2016  A 3 × 3 m wet overflow ball mill in open circuit was charged with 38 t of grinding media in the form of 101 mm diameter balls at a density of 7.9 t/m 3. The mill rotated at 21 rpm. The bed porosity of the material to be ground was 35% and the work index of the material 13.7 kWh/t (wet grinding). The feed size was 80% passing 2.0 mm and the final product size expected was 80% passing 75 μm ...01/01/2016  A 3 × 3 m wet overflow ball mill in open circuit was charged with 38 t of grinding media in the form of 101 mm diameter balls at a density of 7.9 t/m 3. The mill rotated at 21 rpm. The bed porosity of the material to be ground was 35% and the work index of the material 13.7 kWh/t (wet grinding). The feed size was 80% passing 2.0 mm and the final product size expected was 80% passing 75 μm ...

how to run wet process ball mill - hotelangelregency

Fig.1 Manhole of batch ball mill • Batch ball mill : The balls as ...Ball mill - WikipediaThe ball mill can grind ores and other materials, wet or dry. There are two kinds of ball mills according to their ways of discharging material: grate type, and overfall type. Many types of grinding media are suitable for use in a ball mill, each material having its own specific properties and ...Fig.1 Manhole of batch ball mill • Batch ball mill : The balls as ...Ball mill - WikipediaThe ball mill can grind ores and other materials, wet or dry. There are two kinds of ball mills according to their ways of discharging material: grate type, and overfall type. Many types of grinding media are suitable for use in a ball mill, each material having its own specific properties and ...

Ball Milling - an overview ScienceDirect Topics

Ball milling, a shear-force dominant process where the particle size goes on reducing by impact and attrition mainly consists of metallic balls (generally Zirconia (ZrO 2) or steel balls), acting as grinding media and rotating shell to create centrifugal force.In this process, graphite (precursor) was breakdown by randomly striking with grinding media in the rotating shell to create shear and ...Ball milling, a shear-force dominant process where the particle size goes on reducing by impact and attrition mainly consists of metallic balls (generally Zirconia (ZrO 2) or steel balls), acting as grinding media and rotating shell to create centrifugal force.In this process, graphite (precursor) was breakdown by randomly striking with grinding media in the rotating shell to create shear and ...

What particle size range does ball mill grinding produce?

22/12/2016  The ball mill can grind various ores and other materials either wet or dry. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. There are ...22/12/2016  The ball mill can grind various ores and other materials either wet or dry. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. There are ...

TECHNICAL NOTES 8 GRINDING R. P. King

Grate discharge Wet Overflow discharge Wet Figure 8.5 Effect of mill filling on power draft for ball mills. The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 8.4 The speed of rotation of the mill influences the power draft through ...Grate discharge Wet Overflow discharge Wet Figure 8.5 Effect of mill filling on power draft for ball mills. The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 8.4 The speed of rotation of the mill influences the power draft through ...

Ball mill media optimization - Metcom Tech

plant ball mill’s grinding efficiency (Fig. 1). The functional performance parameters “mill grinding rate through the size of interest,” and “cumulative mill grinding rates” from both plant and small-scale tests are applied to this task. A plant media sizing methodology, and industrial case studies, are provided. Background A previous article (“Ball mill classification system ...plant ball mill’s grinding efficiency (Fig. 1). The functional performance parameters “mill grinding rate through the size of interest,” and “cumulative mill grinding rates” from both plant and small-scale tests are applied to this task. A plant media sizing methodology, and industrial case studies, are provided. Background A previous article (“Ball mill classification system ...

Grinding Ball_Tangshan Fengrun Shougang Metallurgy

The balls have a lot of excellent properties, such as higher hardness, good abrasive resistance, together with a good surface finish and small dimensional allowance after scientific heating treatment, as one type of grinding media, it can be widely used in ball mill grinding systems of mines, cement, building materials and chemical industries,etc. Relevant product details,please click here ...The balls have a lot of excellent properties, such as higher hardness, good abrasive resistance, together with a good surface finish and small dimensional allowance after scientific heating treatment, as one type of grinding media, it can be widely used in ball mill grinding systems of mines, cement, building materials and chemical industries,etc. Relevant product details,please click here ...

Changzhou Jinzhen Plastic Rubber Product Factory——Gym Ball ...

changzhou jinzhen plastic rubber product Factory , founded in 2002,expertised in producing pvc balls. Our major business is OEM and foreign trade, and our factory has ability to changzhou jinzhen plastic rubber product Factory , founded in 2002,expertised in producing pvc balls. Our major business is OEM and foreign trade, and our factory has ability to