ZHENGZHOU SANHUI TRADINGS CO.,LTD, IS DEALING IN REFRACTORY METAL AND ARC WELDING FIELDS FOR 15 YEARS. WE HAVE OUR OWN FACTORY MAKING THEM CHINA AS WELL.WE ARE MAINLY FOCUSING ON 1 TUNGSTEN, MOLYBDENUM, TITANIUM, TANTALUM, NIOBIUM ...
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