"Haiyan rongwei established in 1995 where located in haiyan industrial zone which has convenient transportation that access to both Shanghai Ningbo, Suzhou and Hangzhou. Rongwei is a professional manufacturer of various non-standard pieces and fastening pieces. We have precision automatic lathe, CNC machines, punch machines, checking and testing equipment etc which specializing to produce precision auto lathe fittings, punch fittings. We can design and manufacture sorts of non-standard and standard fasteners base on customers request. Including all kinds of special screw, bolts, pin, insert nut, rivet, bearing and parts and so on. These products are used in many industries, especially in electronic, computer, automobile, machinery, medical instrument and sport equipment.