... production of various engineering machinery high-end crawler undercarriage system chassis, the products are: Caterpillar Track ... Assembly, Crawler Board and Assembly, Roller (single, bilateral series), ... , Komatsu, Hitachi, Kato, Sumitomo, Kobelco, Daewoo / Doosan , Hyundai, Case, JCB, Liebherr,JohnDeere,AtlasCopco,Fiat,Kubota,Takeuchi,Ihisce,Terex ...