
Safety Rules For The Construction And Installation Of Lifts - Lifts For The Transport Of Persons And Goods - Part 21: New Passenger And Goods Lifts In Existing Buildings
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
DRAFT 2009 [01/02/2009]DRAFT 2003 [01/05/2003]
Supersedes DIN EN 81-11. (05/2003)
PREN 81-21:2009 - Identical