Changyi Kaiyuan is a professional manufacturer of metal spring wire compression spring, extension spring, torsion spring, flat spring, spring and its various special-shaped springs spring professional spring manufacturer. Hundred employees, including three senior engineers, professional and technical personnel. To undertake the manufacture of various springs, according to customer needs, help design the required spring. Our Japan, Taiwan imported CNC spring machine, and a mechanical spring unit of domestic production and testing equipment used test equipment produced in Taiwan CNC. 
 Manufacture of various metal wire compression spring, extension spring, torsion spring, flat spring, spring and its various special-shaped springs spring 
 Manufacture of various metal wire compression spring, extension spring, torsion spring, flat spring, spring and its various special-shaped springs spring 
 Manufacture of various metal wire compression spring, extension spring, torsion spring, flat spring, spring and its various special-shaped springs spring