... ,34CrNiMo6,BS970 826M40 We Shanghai ZENT Industrial Co., Ltd was established in 2006, situates in the Yangtze ... machining, and heat treatment. Shanghai ZENT Industrial Co., Ltd specializes in the free forging of carbon steel, alloy ... Automotive accessories, Construction machinary, Marine machinary, Electric equipment, Petro-Chemical, Hydrautic machinery, and Mining machinery. General specifications of ...