1.parts for automobile,bolt 2.non-standards bolt,stud 3.passed ... 4.color,diameter,length according to req 1.parts for automobile,bolt2.non-standards bolt,stud3.passed ISO 9001, ... requestparts of automobile(stud,non-standard bolts)We produce all kinds of bolts which are used on the automobile and motors. ... the customers .as well as we produce the parts for automobile according to the customer's drawing ...