Chongqing Gearbox Co.,Ltd. is one of members of China Shipbuilding Industry Corporation, which is the central-goverment controlled large-size enterprise, specialized in designing and manufacturing high precision and case hardening gearboxes, couplings, dampers for marine industry, and gearboxes for building materials, hydroelectric power, thermal power, nuclear power and wind power industries, yaw and pitch drive, high precision automobile engine gears.