Material:Gr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, Gr23, etc. "Standard: GB,DIN, IFI,UNC,UNC,JIS, BS,BSW ,ISO DIN912,DIN913,DIN914,DIN915,DIN916,DIN931,DIN933,DIN934,DIN84,DIN963, DIN125,DIN 127,DIN433,DIN7991,7984,6921,6923,ISO 7380,JIS,BS etc." Certificate: ISO9001:2008,SGS Surface Treatment: Polishing, Anodizing, Black...