Established in 2010, Quanzhou Kequenda Engineering Machinery Co., Ltd. is a professional manufacturer and trader who specialized in research, development and production of undercarriage parts for tractors, excavators, bulldozers and cranes. Products are applicable to most brands: Our products are for crawl type machines, including track rollers, carrier rollers, sprockets, segments, front idlers, track chains, track groups, track shoes, swamp shoes, track adjuster assy, rubber shoes, rubber links, hydraulic cylinders, slewing bears, link H, link I, bolts nuts, pins and bushings, etc. With the development of 10 years, Our products have been sold to more than 20 countries & regions from worldwide: The company has passed the certification of management systems, formed a complete set of normative documents on product quality and environment management, thereby guaranteeing the product quality: ISO9001 Quality Control System Certificate ISO14001 Environmental Management System Certificate Good After-Sale Service: 1) Warranty: 2500 working hours for track roller and idler; 3500 working hours for carrier roller; 1800 working hours for sprocket; 3000 working hours for track chain Providing that the Goods are correctly adjusted and maintained, operating hours do not exceed the above mentioned limits, though there are problems with quality, the Buyer shall send photos of damages together with the inspection report made by the Chamber of Commerce in their countries to us. In such a case, we shall reimburse the Buyer the cost of the damaged goods or compensate the Buyer the same goods with the same damaged quantity 2) Quick response, 24 hours customer service.Crawler Crane Lower Roller factory website:http://www.kqdmachine.com/