... .4)We can produce all kinds of machinery precision parts and non-standard parts of diameter 2 - 30 length 5mm-300mm, and ... of customized bolts M4-M20, various types of standard parts and non-standard parts6)Nut standard parts can be processed custom GB, BS, ANSI, ... DIN and various non-standard parts,Special-shaped parts, precision machinery parts,we can suplly all kinds of nuts,inculding ...