Our company is located in Shanghai, China. We are specialized the design and manufacture of rotary damper ruler tape. has ten years' experience, a professional production team, imported Japanese test equipment, so we can provide customers with any kind high cost performance. insist on ...

ChangZhou Double Spring Co., Ltd. The Company was established in 2010, it is a specialized manufacturer which dedicated to gas spring research and development, production sales. with high degree of professional guidance, successively developed various types spring, total four series more ...