Xiamen Landhong Industry Co.,Ltd located in Xiamen,Fujian Province, China, the manufacturer of undercarriage parts for excavators and bulldozers, such as track roller( bottom roller / lower roller) , top roller( carrier roller/ upper roller) , idler assy( front idler) , sprocket & segment, and track chain( track link assy) for Komatsu, Caterpillar, Hitachi, Volvo, Kato, Daewoo, Hyundai, Samsung, Sumitomo, Kobelco etc.