USI Corporation designs, develops, manufactures, and sells polyethylene in Asia, the United States, Europe, Africa, Oceania, and internationally. The company offers low-density polyethylene, ethylene vinyl acetate, high-density polyethylene, and linear low density polyethylene resins; vinyl chloride monomer products; and PVC powder, plastic pellets, and chemicals, as well as plastic tubes and other related products. It also provides polystyrene; acrylonitrile-butadiene-styrene copolymer resins; styrene; glass wool products; manganese-zinc soft ferrite powder; and manganese-zinc soft ferrite cores. In addition, the company offers management, optical products and fireproof materials, warehousing petrochemical raw materials, business management consulting, and commission agency services; engages in the import and export trade, importing and distributing of various chemical raw materials and products, and reinforced plastic products manufacturing; manages chemical products equipment and plastic products; and wholesales electronic materials. Further, it provides produces and markets stretch films, embossed films, and industrial-use multi-layer wrap; sapphire crystals; polystyrene, acrylonitrile, butadiene, ABS resin, SAN resin, glass wool insulation products, and plastic materials; polystyrene derivatives; plastic cloths, skins, tubes, powder, and other related products; and vest bags, garbage bags, and diapers. It provides its products under the EVATHENE, PAXOTHENE, UNITHENE, LINATHENE, and ViviOn names. The company was formerly known as USI Far East Corporation. USI Corporation was incorporated in 1965 and is headquartered in Kaohsiung, Taiwan.