ygs67 发表于 2016-3-30 16:10:56

ASTM D4995-10(2015)

ASTM D4995-10(2015) Standard Specification for Electronic and Degreasing Grades of 1,1,2–Trichloro 1,2,2,–Trifluoroethane Solven

admin 发表于 2016-3-30 16:25:56

谢谢您的分享，金币已奖励！
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