聚氨酯 Traditional form: 聚氨酯 Pinyin (reading): jù'ānzhǐ Definitions: polyurethane Characters: 聚 - to assemble, to collect, to meet 氨 - ammonia 酯 - ester Traditional characters: 聚 - to assemble, to collect, to meet 氨 - ammonia 酯 - ester