Hebei xingtai steel spring machinery factory (hereinafter referred to as "special steel spring") is the north spring mechanical specialized production factory, the main products are coil spring machine series, twist spring machine series. The products produced by the domestic and international countries regions adopt. Its production of spring throughout the machinery, the electron, the automobile, mining, valve, stationery national economy such as fields. I plant to research and development as the main body, and actively grasp spring machinery development of new technology, and to make products in domestic and overseas has high know pinliang degrees. Products in the design concept, the structure is collected in the industry with the essence of spring machinery. Produce quality spring machi..