... ,Gr5,Gr7,Gr9,Gr12 2)Difference: a, Titanium for the chemical aspects,PCBequipment,electrodes. b, Titanium alloy used in Bicycle,Motorcycles,Electric Vehicles ... . About factory: We are a main manufacturer specializing in titanium products for many years.Titanium bars, tube and sheets, titanium fasteners, .titanium nuts, bolts, washers ...