wuyoujiao2010 发表于 2018-4-11 14:21:46

求EN 1155-1997+A1-2002+AC-2006英文版,多谢!

求EN 1155-1997+A1-2002+AC-2006英文版,多谢!

liuxilin1215 发表于 2018-4-11 14:21:47

BS EN 1155-1997 (2006) Building hardware — Electrically powered hold-open devices for swing doors — Requirements and test methods

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