Application types: 1).Komatsu: PC40,PC60-1,PC60-5/6,PC90,PC100,PC100-5,PC120-5,PC180-3,PC200-3/5/6, PC200-6,PC200-7,PC210LC-5,PC220-7,PC240-3,PC300-3/5,PC400,PC400-3/5, 2).Hitachi : EX30, ZAXIS40,ZAXIS55,EX60,EX70,EX90,EX100,EX100-M,EX120,EX150, EX200-1,EX200-2/3/5,ZAXIS230,ZAXIS240,ZAXIS270,ZAXIS330,EX300-1, EX300-2/3,EX300-5,EX400,EX400-2,EX400-3/5,EX550,EX700,EX1000,EX1100, FH220-3,FH330, 3).Cat : E120B,E200B,CAT320LN,CAT215DLC,CAT225DLC,CAT235LC,E240,E312,E320, E320B,E300B,E300L,E325,CAT325LN,E330,CAT330LN. We are a direct manufacturer ofproducing& exporting the undercarriage partsfor Excavators & Bulldozers for many years , the main products areTrack roller , Carrier Roller , Sprocket, Idler and forged tooth and so on. KOMATSU , HITACHI,CATERPILLAR,SUMITOMO,KOBECO,DAEWOO,KATO,MITSUBISH, MITSUBISHI,SAMSUNG, VOLVO