ygs67 发表于 2016-1-9 21:45:42

ASTM D7119 D7119M-13a

ASTM D7119 D7119M-13a Standard Guide for Sampling Spray Polyurethane Foam and Coating in Roofing.

admin 发表于 2016-1-11 11:07:44

谢谢您的分享,金币已奖励!
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