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Changzhou Cheeron Construction Machinery Equipment Co., Ltd.

17 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Threaded Rebar Coupler, Bolt Coupler, Upset Forging Rebar Coupler, One Touch Rebar Coupler, Grout Sleeve, Rebar Threading Machine, Seamless Steel Pipe, Rock Anchor Bolt, Crosshole Sonic Logging Tube, Rebar Upsetting Machine
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Established in 1998, Changzhou Cheeron Construction Machinery Equipment Co., Ltd. (Cheeron® ) is a top Chinese manufacturer of rebar connectors and seamless steel pipes. Headquartered in Changzhou, Jiangsu, we are a comprehensive enterprise integrating R&D, production, sales, and customer service.

Chiping Dingli Steel Sleeve Co., Ltd

13 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Rebar Coupler, Upsetting Coupler, Threading Machine, Upsetting Forging Machine
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Chiping Dingli Steel sleeve Co., Ltd. Was founded in 2011. With more than 10 years of experience in the field of rebar couplers manufacture, the company is located in Xinfa Industrial Park, Chiping County, Liaocheng City, Shandong Province. The registered capital is 6 million. Covers an area of 5, 000 square meters. 2011-2015 mainly in the Chinese domestic market, has served China's major nuclear power plants and national enterprise buildings, 2016-now began to export, the establishment of 6 types of reinforced couplers, can be customized to a variety of sizes of couplers, in 2017 developed the cone thread system, in 2018 developed the fast connection system, We did not stop on the road of research and development, and strive to break through Dingli is a professional development, production and sales of rebar coupler and other mechanical connection products of the enterprise. From inner management to outer sales, from technology improvement to customer complaints, we put all our efforts in providing products with high quality, perfect service and reasonable price that clients require. Our products have been exported to: USA, Mexico, Colombia, Australia, Poland, Russia, Korea, Thailand, India, Singapore, Malaysia, Vietnam, KSA, Qatar, Kuwait, Iran, Philippines, Ethiopia, Pakistan. Our annual productivity is 5, 000, 000 PCS of different kind of rebar coupler. The most fast delivery time is within 5days for one container. Clients inspection on site is acceptable at anytime. We do produce Rebar parallel thread connection, cold press connection, rebar bridging connection, rebar taper thread connection, rebar nut-lock screw connection, one touch coupler and bolt coupler. We give client the best product and service with reasonable price, highest quality. Our company is approved by the industry with good faith strength and product quality.

Xuzhou Bonovo Machinery & Equipment Co., Ltd.

15 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Mini Excavator, Backhoe Loader, Skid Steer Loader, Wheel Loader, Electric Excavator, Excavator Bucket, Excavator, Amphibious Excavator, Excavator Attachment, Electric Loader
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Xuzhou Bonovo Machinery & Equipment Co., Ltd. is a professional company integrating R&D, manufacturing and sales of construction machinery attachments, GET parts, and undercarriage. From end-users and OEM partners to our dealers, Bonovo has built a reputation for exceptional quality and customer service. We have built solid cooperation with world - renowned dealers as OEM in supporting processing and provided support services for domestic and foreign manufacturers.

Yangzhou Xinshi Machinery Co., Ltd.

10 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Grapple, Quick Hitch Couplers, Hydraulic Shear, Clamshell Bucket, Excavator Magnet
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Yang zhou Xinshi Machinery Co., Ltd. is a leading manufacturer of excavator attachments in China. All products quality was strictly under control from processing to delivery. By continuous innovation and improvement. Our products have been sold to widely domestic and oversea customers and long term partnerships have been developed.

Yantai Shengxin Construction Machinery Co., Ltd

4 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Breaker, Hydraulic Plate Compactor, Swing Quick Connector, Hammer Back Clamp, Field Mower, Hydraulic Power Shear, Ripper
Country/Region:
Shandong, China
R&D Capacity:
ODM Service
Company Profile:
Yantai Shengxin Construction Machinery Co., Ltd. is a modern manufacturing enterprisecommitted to independent R & D, production and sales of various supporting operating devicesof excavators. Located in Fushan District, Yantai City, Shandong Province, the company has acutting-edge technology R & D group and production technology.

Qingdao Lkd Metal Fabrication Co., Ltd.

6 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Customs Parts Metal Parts Welding Parts, CNC Machining Service, Trailer Part Mounting Bracket, Snow Plow Shoe, Weldments Welded Parts, Sheet Metal Fabrication, Pre-Fabrication Structure, Motorcycle, Welding Frame Fabrication, Metal Welding Part
Country/Region:
Shandong, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Qingdao LKD Metal Fabrication Co., Ltd. is an OEM manufacturer specializing in custom metal fabrication and welded parts for outdoor heavy-duty equipment.  

Yantai Wenbo Construction Machinery Co., Ltd.

5.0
Main Products:
Excavator Attachment, Crusher Bucket, Rotary Screening Bucket, Hydraulic Grab, Quick Coupler, Hydraulic Shear, Hydraulic Pulverizer, Magnet, Pile Driver, Plate Compactor
Country/Region:
Shandong, China
R&D Capacity:
ODM Service
Company Profile:
Yantai Wenbo Engineering Machinery Co., Ltd. is located in Yantai City, Shandong Province. We are a leading manufacturer of attachments for excavators, skid steers, loaders, cranes, and other construction machinery in China. The company also manufactures construction equipment such as excavators, skid steers, and more. Since our establishment, we have adhered to the corporate spirit of "pragmatism and hard work, " and our business philosophy is based on integrity and mutual benefit. We are committed to providing high-quality products.

ZRD Rebar Couplers Co., Ltd

5.0
·Manufacturer/Factory
Main Products:
Rebar Coupler, Steel Bar Coupler, Steel Bar Connection Port, Steel Bar Connection Sleeve, Reinforcement Sleeve, Steel Bar Straight Thread Joint, Steel Bar Straight Thread Threading Machine, Steel Bar
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
ZRD Rebar Couplers Co., Ltd. is one of leading manufactures in rebar couples for more than 12 years.

Xuzhou YF Bucket Machinery Co., Ltd.

9 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Excavator bucket, Excavator skeleton bucket, Excavator Quick Coupler, Ripper, Excavator Grab
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
YF Bucket was established in Xuzhou Jiangsu Province, China in 2002. It specializes in development, design and manufacture of excavator buckets and related accessories. YF Bucket 's products could support most international excavator manufacturers in China, Europe and America, Japan, Korea and so forth. The products have been exported to countires in Europe and America, Southeast Asia, and the Middle East We have gained great experience on excavator after-sale market for more than 18 years and have established a rubost quality assurance system. Buckets and related accessories from YF fit many models of excavators, which could be used for different types of mining projects.

Linyi Xinchen Machinery Co., Ltd.

11 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Mechanical Equipment
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Founded in 2016, Linyi Xinchen Machinery Co., Ltd. is a professional manufacturer and exporter of construction machinery, based in Linyi, Shandong, China's key machinery industrial hub. Benefiting from superior geographical location and convenient sea, land and railway transportation, the company owns standardized production workshops and a complete manufacturing system, supporting large-scale, high-efficiency and high-quality production for global clients.

Yantai Shijin Machinery Co., Ltd.

11 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
DEHN-furukawa Series, Hydraulic Breakers, Hydraulic Grapple, Earth Drill, Hydraulic Pliers, Compactor, Ripper, Screen Hopper, Quick Coupler, Tree Pruning
Country/Region:
Shandong, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Yantai Shijin Machinery Co., Ltd. Was established in April 2016. Yantai Shijin Machinery Co., Ltd. is a professional production, research and development, sales excavator hammer, excavator front-end is a related products enterprises. The company has many advanced production equipment and highly qualified technical personnel, capable of providing customers with high quality products and quality services. The company focuses on technological innovation and product quality, and has a good reputation and credibility within the industry. With the continuous renovation of manufacturing equipment, the production and supply of up to hundreds of large and small-size appliance models has been ensured. The main products: Hydraulic breaking hammer, grab wood, grab steel, quick connectors, vibratory rammer, scarifier, auger, crushing pliers, hydraulic scissors, digging bucket and so on hundreds of kinds of excavators with front. Since 2019, we have absorbed nearly 20 new and former graduates from major universities and regional personnel, accounting for more than 50% of the undergraduate qualifications, ensuring the continuous innovation of the company team. We always regard product quality as the company's soul. Adhere to the principle of service, innovation and sustainable development, to create the first brand of "DEHN" in the industrial and military equipment industry. It will provide you with first-class technical support. Best product quality and extensive supply of accessories and professional after-sales service! Since 2019, the company has obtained CE certification and more than a dozen product patents. Its brand DEHN will receive the global Madrid trademark in 2021, which ensures the overseas expansion and layout of the DEHN brand. At present, the products in Europe have won the trust of foreign customers such as Germany, the United Kingdom, and Norway with ultra-high cost-effectiveness, and have formed stable cooperation relationships. In Southeast Asian countries, DEHN brand in Thailand's brand image and market share has reached 25%. The market share in Vietnam, Indonesia, the Philippines and Malaysia continues to rise, and the company's products have been sold to more than 50 countries around the world, gradually realizing the vision of "Made in China, convincing the world.

Yantai Jiwei Construction Machinery Equipment Co., Ltd.

4.7
Main Products:
Hydraulic Breaker, Hydraulic Hammer, Excavator Grapple, Excavator Breaker, Hydraulic Rock Breaker, Excavator Pulverizer, Quick Hitch Coupler, Martillo Hidraulico, Hydraulic Breaker Manufacturer
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Established in 2009, Yantai Jiwei Construction Machinery Co., Ltd are always focusing on development, production, sales and services of hydraulic breakers and various excavator attachments such as hydraulic grapple, hydraulic demolition grab, excavator ripper, hydraulic compantor, pile hammer, hydraulic shear, excavator buckets, mini excavator and so on. With professional manufacturing technology, Our HMB brand hydraulic breakers and related excavator attachments are widely used in construction, demolition, metallurgy, mining industry and so on.

Yantai Zhuoxin Machinery Technology Co., Ltd.

4 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Breaker, Hydraulic Pile Hammer, Quick Hitch, Hydraulic Shear, Hydraulic Pulverizer, Grapple, Orange Peel Grapple, Hydraulic Compactor
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Yantai Zhuoxin Machinery Technology Co., Ltd., with its extensive 16-year history, stands as a testament to excellence in the field of excavator attachment manufacturing. As a comprehensive, one-stop enterprise, Zhuoxin Machinery is dedicated to providing top-tier solutions tailored to the dynamic needs of the construction and excavation industries worldwide.

Shanghai Ransun Dingli Technology Co., Ltd.

12 yrs
·Trading Company
Main Products:
Excavator Bucket
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Ransun Industry Co., Limited is a leading manufacturer and trader of excavator and loader attachments. We have more than 10 years of experience in the manufacture, sale, and service of construction machine parts. Our products sell well in Europe, the Middle East, Africa, Southeast Asia, and America. Product ranges: We offer a full range of buckets for machines from 0.01m3 to 12m3 in bucket capacity for a large variety of applications. The applications include light and general construction, road, and rail construction as well as quarrying and mining industries. We manufacture all brand buckets with high-quality steel or other materials. We can offer KOMATSU, CATERPILLAR, HYUNDAI, SUMITOMO, DAEWOO, KOBELCO, Volvo, KATO, and KUBOTA brand buckets. Besides standard buckets, Rocky buckets, and Heavy-duty buckets, we also offer special-purpose buckets, such as Tilting buckets, Hydraulic thumb buckets, Skeleton buckets, Cleaning buckets, Grab buckets, rake, shovel bucket, ripper, ripper bucket loader buckets, and other attachments for your excavator. We aim to make clients satisfied. Ransun will guarantee product quality. You can just feel it when you are working. The bucket capacity fits your machine exactly, and with the right materials. Our materials are wear-resistant. Therefore, they last longer with the minimum maintenance costs. This means less downtime for the machine and it offers you economic advantages. We have three types of excavator buckets, including General Purpose type, Heavy Duty type, and Rocky type. Our vision: We focus on the management belief of "Quality first, Reputation significant, Customer-based". As a proud owner of RanSun bucket, it is important that you keep being satisfied. Whatever type of Ransun bucket you choose, you always choose for quality and you will see that a RanSun bucket will guarantee you quality.

Yantai Hope Precision Machinery Co.,Ltd.

7 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Breaker, Quick Coupler, Main Body, Hydraulic Grabber, Vibrating Compactor, Hydraulic Pulverizer, Chisel, Seal Kits, Piston, Cyclinder, Front Head, Back Head, Reversing Valve, Through Bolt
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Yantai Hope Precision Machinery Co., Ltd. Was officially established in 2006 in Yantai, a coastal city with beautiful scenery. Since its establishment, the company has been always focusing on the field of excavator attachments and their accessories. It has been working painstakingly in the technical research and development as well as sales and service of products such as crushing hammers, wood grapples, vibratory rammers, and quick couplers, accumulating profound industry experience and technical strength.

Guangzhou Huilian Hydraulic Technology Co., Ltd

Main Products:
Excavator Attachment, Hydraulic Hammer, Hydraulic Breaker, Excavator Quick Coupler, Excavator Ripper, Sorting Grapple, Excavator Grab Bucket, Excavator Hydraulic Crusher, Hydraulic Breaker Parts, Hydraulic Breaker Chisel
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Guangzhou Huilian Hydraulic Technology Co., Ltd is a professional manufacturer of Excavator Attachmnet, and has been specializing in this line of business for more than 17 years, Main products like Hydraulic Hammer, Hydraulic Breaker Parts, Excavator Quick Coupler, Excavator Ripper, Excavator Hydraulic Shear, Excavator Earth Auger, Excavator Hydraulic Grab, Orange Peel Grapple, Hydraulic Power Thumb and Excavator Grab Bucket etc.

Hunan Hongchang Machinery Co., Ltd

6 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Mini Excavator Attachments, Quick Hitches,Hydraulic Quick Hitches,Hydraulic Tilting Quick Coupler, Bucket,Tilt Bucket,Wheel Loader Attachments,Wheel Loader Bucket,Hydraulic Rotary Sweeper,Mini Dumper
Country/Region:
Hunan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Founded in 2021, Hunan Hongchang Machinery Co., Ltd. is a comprehensive construction machinery manufacturer integrating complete machine production, machinery attachments, structural components and customized manufacturing services.

Yantai Donghong Construction Machinery Co., Ltd.

11 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Tilt Rotator, Quick Hitch, Tilt Hitch, Rock Breaker, Pulverizer, Grapple, Ripper, Bucket, Thumb Bucket, Hydraulic Thumb
Country/Region:
Shandong, China
R&D Capacity:
ODM Service
Company Profile:
Yantai Donghong Construction Machinery Co., Ltd, is a professional enterprise that mainly focuses on excavator attachment researching & developing, and marketing. As for now, Yantai Donghong Machinery has built reliable relationship with clients over 20 countries, such as the United State, Russia, Australia, New Zealand, Japan, South Korea, Malaysia, Israel, and India etc. All products' quality is strictly under control from processing to delivery. Nowadays Yantai Donghong Machinery has invested its own manufacturer in China. The main products include tiltrotator, quick coupler, tilting coupler, rotating coupler, breaker, bucket, grapple, pulverizer, crusher, shear, ripper, compactor etc. These reliable excavator attachments are widely used in the construction work, earth-moving work, demolition work, and mining industries both in China and overseas. Due to continuous innovation and improvement, different customized demands can be well solved. OEM products and feasible plans are well offered, helping clients find the best solutions in different circumstances.

Jinan Changhao Machinery Equipment Co., Ltd.

10 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Rock Breaker, Hydraulic Breaker Spare Parts, Hydraulic Breaker Piping Kits, Hydraulic Breaker, Excavator Attachments, Jack Hammer
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
With over 20 years of expertise, Jinan Changhao Machinery equipment Co., Ltd. is a professional manufacturer of hydraulic breaker, hydraulic breaker piping kits, excavator attachments and related accessories, based in Jinan, China, boasting a 10, 000 square meter production facility. Upholding "Quality First, Customer-Centric, Reputation-Built", we deliver factory-direct, high-performance solutions trusted by global contractors.

Yantai Huida Intelligent Equipment Co., Ltd

8 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Scrap Metal Shear, Shread Machine, Excavator Shear, Excavator Graple, Excavator Quick Coupler, Crucher, Mulcher, Breaker, Bucket
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Yantai Huida Intelligent Equipment Co., Ltd. Was originally established in December 2016, with a registered capital of 20 million RMB. Is a professional manufacturer dedicated to the R&D, production and sales of scrap steel processing, automobile dissolving, renewable resource utilization, environmental protection and energy-saving equipment and excavator accessories. So far, we have nearly 40 product invention patents, and obtained 1S09001 quality management system certification. At present, our main products are scrap steel (metal) cutting equipment: Hydraulic Gantry Shear, Tiger-head shear, shredder, scrap steel (metal) processing equipment: Cleaning roll, baler, Excavator machinery and accessories: Eagle hydraulic shear, Double cylinder Demolition Shears, Hydraulic Car Scrap Shear, Thumb clip, Steel Grapple, Magnet Lift, coupler, etc. From the procurement of parts to the delivery of finished products, all our products are under the whole process of quality control, and through CE certification.

Taizhou Ango Machinery Co., Ltd.

5.0
Main Products:
General Equipment Manufacturing
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
TAIZHOU ANGO MACHINERY Co., Ltd was founded in 2009,  located in Taizhou bay new Industrial Zone, Luqiao District, Taizhou, one of China's most important manufacturing hubs for mechanical equipment and cleaning machines. Our company specializing in manufacturing High pressure PMSM washer, Pmsm Motor, High pressure fog machine, Surface cleaner and accessories.

TIANJIN ZHIYI METAL PRODUCTS CO., LTD

Main Products:
Steel Prop, Scaffolding, Steel Plank, Steel Formwork, PPGI, Base Jack, Steel Pipe, LVL Plank, Plywood, Scaffolding Coupler
Country/Region:
Tianjin, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Tianjin Zhiyi Metal Products Co. Ltd was founded in 2002, which holds ten million RMB registered capital. Our company is located in Tianjin, a port city in northern China, and its covers an area of 27000 square meter. Our company was specialized in the design and manufacture of metal products. The products of our factory have always been wildly recognized by both abroad and domestic customers in the past ten years. In the year 2008, our company was officially designated as the main supplier of assistant project by Tianjin government. And our products that were exported to west Asia and South American was wildly popular among our customers.

Shandong Lingdong Intelligent Equipment Co., Ltd

4 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Tiltrotator, Bucket, Hydraulic Breaker
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Lingdong Intelligent Equipment Co., Ltd. Founded in 2013, is located at No. 1 Wuzhishan Road, Yantai Economic and Technological Development Zone, Shandong Province - a coastal city known for its beautiful scenery and strategic industrial infrastructure. As a comprehensive enterprise integrating production, R&D, sales, and after-sales service, we specialize in manufacturing hydraulic breakers and a full range of excavator attachments.

Yantai Juxiang Construction Machinery Co., Ltd

19 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Vibro Hammer, Hydraulic Breaker, Excavator Long Reach Boom, Primary Crusher, Hydraulic Metal Shear, Secondary Crusher, Screening Bucket, Quick Hitch Coupler, Plate Compactor, Hydraulic Attachments
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
In 2005, Yantai Juxiang, a manufacturer of excavator attachments, was officially established. The company is a technology-driven modern equipment manufacturing enterprise. It has passed ISO9001 quality management system certification and CE EU quality management system certification.

Yantai Dongheng Machinery Co., Ltd

5.0
Main Products:
Auger Drive, Hydraulic Breaker, Cone Log Splitter, Mixer Bucket, Hydraulic Compactor, Hedge Trimmer, Saw Head, Tree Shear, Chain Trencher, Quick Hitch Coupler
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Yantai Dongheng Machinery Co., Ltd. is established in 2010, which is a professional enterprise devoted to R&D, manufacture and sell Hydraulic breaker, Auger drive, Hydraulic compactor, Concrete Mixer Bucket, Log splitter, Saw head, Hedge trimmer, Stump Remover, Tree Shear, Chain Trencher, and other construction, forestry and agricultural machinery and attachments.

Quanzhou Fuwei Machinery Co., Ltd

5.0
Main Products:
Bucket Tooth, Slewing Bearing, Digger, Bucket, Track Roller, Track Lin, Excavator Tires, Engine, Hydraulic Pump, Oil Cylinder
Country/Region:
Fujian, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Fuwei Engineering Machinery Co. Ltd. Of Quanzhou City is an integrated engineering machinery parts production enterprise. There are more than a dozen provincial offices such as Shandong, Shenyang, Guangzhou, Beijing, Hangzhou, Hefei, Nanning, Chengdu, Wuhan, Haik- ou, Chongqing, Guiyang, Jiangxi, Kunming and Harbin. The company has been committed to a variety of Carterpillar, Hitachi, Sumitomo, Kobelco, Daewoo, Kato, Hyundai and other imports, domestic excavators, bulldozers of the heavy wheel, guide wheel chainwheel, drive teeth, chain rails, "four-wheel" The bottom parts and pins, shafts, Research and development, manufacture and sale of high strength and vulnerable parts such as sleeves and bolts.