... workshop.Among more than 300 staffs,including 5 technicians and 12 senior engineers.We have Production Dept.,Sales Dept.,International Trade ... such as brass, bronze, Monel metal (copper-nickel alloy), copper-aluminum alloys (aluminum bronze), or copper-beryllium alloys (beryllium bronze). Commonly used hand ... , drilling crew and so on. TRADE FAIR Water Test Ruler (Copper Rod Type,Cooper Tube Type)