Profile: Puyang United Chemical Co., Ltd. specializes in hydrocarbon resin. We also offer polyurethane sealant. Our C5 hydrocarbon resin products are used in a variety of applications, which include hot melt road making, hot melt adhesive, pressure sensitive adhesive and rubbers. Our polyurethane sealant product range consists of prepolymer-based flexible adhesives and sealants that cure on exposure to atmospheric moisture to form a durable elastomer. They are applied in ship building & vehicle assembly, window assembly, and in bonding, sealing and structural strengthening of household appliances.