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liuxilin1215 发表于 2018-3-14 09:38:25

BS EN 1364-5-2017 Fire resistance tests for non-loadbearing elements Part 5: Air

BS EN 1364-5-2017 Fire resistance tests for non-loadbearing elements Part 5: Air transfer grilles

admin 发表于 2018-3-14 16:30:40

谢谢您的分享，金币已奖励!

hgundas 发表于 2019-10-2 13:54:58

謝謝樓主的分享！！！！！！:)

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