Shandong Meiling High-Strength Fasteners Branch has been engaged in the production of high-strength fasteners for more than 30 years. It is a member of the National Fastener Association, a member unit of the National Fastener Standardization Committee and a major material and equipment supplier of Sinopec, PetroChina, CNOOC, China National Chemical, China Railway Bridge Bureau, China Construction Eighth Bureau and other units.The company has more than 200 advanced specialized equipment for raw material restructuring, cold heading, hot heading, product heat treatment, and mechanical processing required for the production of high-strength fasteners ......