1)administer standard: GB,DIN,ISO,JIS,etc. 2.)delivery in time 3.) ... .)material:gr1,gr2,gr5,gr7,gr9,gr11,etc.2.)size:M3-M603.)standard:GB,DIN,UNC,JIS,BS,ISO4.)features:low density ... test.3.inspection ensure the materials meet destructive and non-destructive test according to industry and customer specification.Applications1.Equipment accessories: airplane, ship ...