1.achieved ISO9001:2000 2.Standards:DIN,ANSI/ASME,BS,GB, ... ,8.8,10.9,12.9 4.Surface:customers demand 1. Standards: DIN ,ANSI/ASME, BS, GB, JIS, Non-standard2. Material ... main products of the company include the following 7 types:1. High strength alloy steel double end stud- , fully-threaded stud ...