sprockets and chains 1,ANSI all type 2 ... CNC lathe, pass ISO, ANSI,DIN quality certification. high precision and good wear resistance. 2, ... mine, build, electron, port etc..professional automation production and conveying transmission equipment MaterialC45, A3, 40Cr, 20CrMnTi, ... negotiablePackagingInner plastic bag and outer carton box or customer requirement. DIN and ANSI machining transmission chain ...