ygs67 发表于 2017-12-11 17:32:14

ASTM D6437-05(2016)e1

ASTM D6437-05(2016)e1 Standard Test Method for Polyurethane Raw Materials; Alkalinity in Low-Alkalinity Polyols (Determination of CPR Values of Polyols)

admin 发表于 2017-12-13 18:44:16

谢谢您的分享，金币已奖励!

384860996 发表于 2018-4-24 08:36:08

好东西   不错哦找了很多地方都没有找到
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