兑水 发表于 2009-10-11 11:03:26

ASTM D 4660-2000 聚氨酯原料的试验方法:甲苯二异氰酸酯中同...

D4660-00 Standard Test Methods for Polyurethane Raw Materials: Determination of the Isomer Content of Toluenediisocyanate
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