... co.,ltd. we are specialized manufactuer of hardware machine partsexample:CNC precision tuning parts, stamping parts, screw stainless steel. thread sleeve ... /8", 1/2", 5/8", 3/4.Features:1. the CNC machining parts material can make by carbon steel , stainlell steel ... , aluminum ,brass etc .2. we can use CNC machine to produce the parts ,so they are highly precise.3.surface ...