1. 采用自行开发的仿形车削-冷精拔复合工艺生产变截面螺旋弹簧具有投资少、效率高、材料省、成本低等优点，完全能满足批量生产要求。
Applying self-developed copying turning-cold finish drawing combined process to produce variable cross-section coil spring had many advantages such as low costs, high efficiency, material saving, low costs and so on, and it can satisfy the requirement of mass production.