1.Style :A word trough screw and bolts 2.Grade:Gr2 ... Certification:ISO9001:2000 Hot-selling and best price screw A word trough screw and bolts Titanium and Titanium alloy ... :Gr1,Gr2,Gr3,Gr5,Gr7,Gr9,Gr12 2)Difference: a, Titanium for the chemical aspects,PCBequipment,electrodes. b, ... ,Medical,Aircarft,Weapons etc. About factory: We are a main manufacturer specializing in titanium products for many years. ...