Tolerance:CNC machining tolerance, usually of metal parts for DIN - 2768-1 -, the plastic parts for DIN - 2768-1 -.Wall thickness, material and geometry will seriously affect the tolerance. We will try our best to meet customer requirements.Material:Stainless steel, brass, copper, A356, Al6061,A357 and varietySurface Treatment:1) Sand blasting2) Zinc/chrome plating3) Powder coating4) Anodizing,5) Heat treatment etc for CNC machining6) Other customer requirementProduction usage:1) car parts2) motorcycle parts3) pump parts4) locomotive parts5) machinery parts6) metal parts7) CNC machining8) machined parts9) precision machining, etc.