... automation degree, possible for manual operation, inching, semi-automatic and full automatic operation, stable and reliable actions, convenient maintenance and complete ... chain, chain hoist, chain lock, drag chain, transmission chain, conveyor chain, manual hoist.About our companyHANGZHOU XINJIAN ELECTRINOC CO., LTD ... both in domestic and international market. HJ-75 Automatic G80 Chain Welding Machine