Our company (CQSD) was established in 2005, and is located in Beibei Zone of Chongqing City. CQSD specializes in producing transmission gearboxes and related spare parts for the heavy-duty truck industry and municipal busses.

CQSD has major resources such as automotive engineers and technical staff members, advanced technology and "state of the art" equipment and precision inspection instrumentation equipment to ensure the quality of our products and long lasting performance.

CQSD can also produce parts from samples supplied by the customer or fabricate parts according to customers' requirements from drawings. CQSD has implemented a Quality Management System (QMS) in accordance with ISO9001:2000 guidelines and our products have established a reputation for outstanding quality both at home and abroad.

Our diverse product line includes synchronizers, gearbox housings, internal transmission gears and shafts for 5S-150GP, 5S-111GP, QJ805, QJ1506, and S6-90 transmissions, etc. CQSD has the ability to rapidly develop new products and in the past several years has become one of the leading manufacturers of heavy-duty automotive transmissions and worldwide.

CQSD is devoted to maintaining a leadership role in the transmission industry through quality and new product development. CQSD's mission is to place quality as a first priority and to treat our customers with courtesy and respect in meeting their product needs. CQSD desires to work with our domestic and foreign customers to achieve product availability and financial goals by offering quality products at reasonable cost.