| 1. | Producer of high purity metals and chemicals used in electronics , fiber optics , and semiconductors . products include germanium , germanium tetrachloride , germanium oxide , arsenic , antimony , copper , cadmium and tellurium -拥有转炉和电炉钢两个生产系统,包括矿山采选烧结焦化炼铁炼钢连铸轧材以及相应的动力运输机械建筑安装等。 |