Special metal material and products, such as high-hardness steel plate, copper-coated steel wire, copper-coated aluminum wire, Bi-Sn alloy, Al-Ti alloy, W-Mo alloy, W-Cu alloy, Br-Cu alloy etc.

• 特殊金属材料，包括超硬耐磨钢板、铜包钢线材、铜包铝线材，及针对特殊用途的合金材料和制品，如铋锡合金、铝钛合金、钨钼合金、钨铜合金、铍铜等。