... established in 1991, we have 5 subsidiaries in china and have 6 subsidiaries abroad; 2. we covering a production area of 200,100 square ... capacity has exceeded 20,000,000meters; 3. we specialized in producing all kinds of standard chains and special chains, such as ... agricultural chains, double pitch conveyor chains and so on; 4. we have obtained ISO9001, ISO14001, ISO16969, AAA and API certificates.5. ...