Founded in 1970, Shandong Ningjin Spring Co., Ltd. is an assigned manufacturer by China's Ministry of Railways. Casting parts and steel springs are the main products of our company.



Steel springs:

We specialize in all kinds of cold and hot coiled springs with the diameter ranging from 0.1mm to 90mm, especially railway, engineering, mine mechanism and vehicle springs. Our main products include compression springs, extension springs, heavy duty extension springs, precise extension springs, power springs, heavy duty torsion springs, precise torsion springs and wire...