... Co., Ltd. is one of the major motorcycle chain and industrial chain manufacturing enterprises and the important export bases in China. Our ... to ISO9001, ANSI, BS, DIN and JIS standards. Our major products are as follows: 1. Motorcycle chains 415, 415H, 420, 420H, 428 ... , 428H, 520, 520H, 525, 525H, 530, 530H, 630 and 630H series; 2. Roller chains A series and ...