The iodine value of the vegetable oil used for making the fatliquoring agents is very low, the synth

中文解释

而聚氨酯结构具有优异的耐寒性、温度适应性、弹性、耐有机溶剂等,但却有耐水性、保光性、自增稠性等方面的缺陷。

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