Teng Yao is a leading spring manufacturer which specialized in constant force springs, flat springs, power springs, and prestressed power springs. Besides spring products, Teng Yao is also possess of advanced equipments, including self-acting compression spring machine, Multi-function & fully automated CNC spring machine, fully automated extension spring machine, automatic spring tester, automatic spring endurance tester, projector, and so on. Please click one of following items you are interested in and get more information. | 
