Materials :
1. The titanium, nickel, zirconium, niobium, tantalum, Ha, tungsten, molybdenum, copper and its alloys ;Which including other special metal materials of board, belt, foil, sheet, tubes, rods, silk, powder, ingot castings, castings, forgings;
2. Titanium/steel, titanium/copper, nickel/steel, copper/steel, stainless steel/steel composites, complosite pipe, composite bar and composite materials.