兑水 发表于 2009-10-18 09:36:11

ASTM D 5629-2005 聚氨酯原料的标准试验方法:低酸度芳香异氰...

D5629-99 Standard Test Method for Polyurethane Raw Materials Determination of Acidity in Low-Acidity Aromatic Isocyanates and Polyurethane Prepolymers
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