公司简介
Our company is a research, production, operating as one of the leading industry standard parts is a professional production of integrated enterprise products. Production materials mainly steel 20MnTiB, 35VB, 40CrMo, 35CrMO, 40Cr; carbon steel 45 #, 35 #, 25 # and so on, all kinds of different materials, fasteners, nuts, hex bolts, to base wire, stud, washer and various national standard, non-stand