... specialized in manufacturing the products of tungsten, molybdenum and other different kinds of special-shape.Main products are as below: ... bolt,molybdenum box,molybdenum alloy plates including TZM, molybdenum special-shape products& alloy series, etc..Series B: Tungsten Series, ... sheet,tungsten screw/nut/bolt, tumgsten box,tungsten special-shape products& alloy series, etc..Series C: High-temperature ...