Qingdao three stone spring Co. Ltd.   

Qingdao three stone China spring Co. Ltd is located in the famous coastal city - Qingdao, a beautiful environment, convenient transportation, favorable geographical position. The company covers an area of 16000 square meters, is a set of pressure spring, tension spring, torsion spring, choke coil spring, plate spring, stainless steel spring, sheet metal stamping, rolling, trapezoidal screw, special-shaped spring more than 1000 kinds of specifications spring production enterprises, and according to the spring production enterprises in Qingdao region for the first time, has a series of spring professional production, advanced detection equipment, such as automatic spring machine, torsion spring machines, universal spring machine, button machine, punching machine, crawler type tempering furnace, projector, double end grinding spring machine, spring tension and compression testing machine, salt spray test machine, spray and shot blasting and other automation equipment nearly 100 sets; and specializing in the production of a clockwork spring (scroll spring) production line, heat treatment, detection of machine equipment.

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