Double-gold factory imported the international advanced equipment of controlled atmosphere heat treatment (Austempering) from Switzerland, taking a leaping step to promote the quality of homemade fasteners, advancing bravely and bearing the responsibilities to invigorate Chinese standard parts industry and get rid of the crisis of dependence on import of fasteners. Through one-off batch production, Double-gold factory is dedicated to producing each piece of product to guarantee consistent products of high quality.As the basic parts for machinery with the widest application, the standard parts play an important role in normal operation of machinery equipment. For 20 years, Double-gold factory has devoted itself to the ",trivial", technology of standard parts and improving service life of various equipment from the very basic aspects, so as to provide your equipment with products of higher added value....