... Steel Standard : AISI, ASTM, DIN, JIS, BS (As per customer need)Machining and Processing : Heat treatment, Polishing, Sand blasting, Painting ... , Chemical Plating, and other machining processing.Good after-sale service : If any quality problem,we pay for the loss ... Tolorence:Min.+/-0.0005 (5)As per customer needServiceOEM and custom-made service.Full machining, primer painting, and surface treatment ...