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| 聚酯型聚氨酯 | |||
| 聚酯氨酯 | |||
| 聚酯型氨基甲酸酯 | |||
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| 聚酯型聚氨酯 | |||
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polyester urethane : 3 phrases in 1 subject |
| Polymers | 3 |
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