highsale high quality nano pad by china chuangdawei polyurethane
1% polyurethane elastic fiber (spandex) 25.
纤维(polyester);接着还有聚氨酯(polyurethane)及聚苯乙烯(polyst
agnp and rhegf-incorporating synergistic polyurethane foam as a
发现包包成分为"polyurethane(聚氨酯/pu), polyester(聚酯)",恰恰是
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