PT Tembaga Mulia Semanan Tbk manufactures, sells, and exports copper and aluminum rods and wires in Indonesia and internationally. It operates in two segments, Copper Rod and Wire, and Aluminum Rod. The Copper Rod and Wire segment produces copper rods and various sizes of copper wires. The Aluminum Rod segment produces EC grade rods, alloy rods, and TAL rods. The company was incorporated in 1977 and is based in Jakarta Barat, Indonesia.