Jining Yadong Construction Machinery Co., Ltd of China ,we has more than 20 years of experience in construction machinery industry. Our main products: 1. Undercarriage parts and GET parts. We are OEM supplier for KOMATSU(China), SHANTUI, PENGPU, and XCMG, etc. 2. KOMATSU Genuine, OEM and replacement parts for bulldozer, excavator, etc. KOMATSU Bulldozer Parts: D31/D41/D50/D51/D53/D60/D85/D155/D355/D375 KOMATSU Excavator Parts: PC60/PC75/PC120/PC130/PC200/PC210/PC220/PC240/PC270/PC300/PC360/PC400/PC450 CATERPILLAR Bulldozer Parts: D6/D7/D8/D9/D10 CATERPILLAR Excavator Parts: E320B/CAT320/CAT325/CAT330 HBXG Bulldozer Parts: SD6D/SD7/SD8/T140/T165 FLEETGUARD: SHANGHAI FLEETGUARD DONGFENG CUMMINS: B/C/ISBE SERIES CHONGQING CUMMINS: N/K/M SERIES Our factory Now we have established our own factory. Our industrial park covers 100,000 square meters, and more than 4 production lines for manufacturing undercarriage parts, Sprocket, Carrier Roller, Track Roller, Idler Roller, Track Shoe Assy, Track Link assy, Recoil Spring Assy, etc.Taking quality as first priority, warranty time of our undercarriage parts would be 6 months or 3500 hours.