Model NO.: Gr1, Gr2, Gr3, Gr4, Gr7, Gr9, Gr11, Gr12 ect. Material: Titanium and Nickel Trademark: ZBTI Specification: GB/T3624 GB/T3625 ASTM B337 ASTM B338 JISH ect Origin: Baoji, China HS Code: 26140000