GB/T 27903 Fire resistance test for lift landing doors – Standard
GB/T 27903: Fire resistance test for lift landing doors - Methods of measuring integrity, thernal insulation and heat flux
GB/T 27903 Fire resistance test for lift landing doors – Reference Standards
GB/T 5907 Fire protection vocabulary-Part 1: General terms
GB/T 14107: Fundamental terminology of fire protection Part 2
GB 7588 :Safety rules for the construction and installation of electric lifts
GB/T 7633:Fire resistance tests for Door and shutters
GB/T 9978-1: Fire-resistance tests. Elements of building construction-part1:General requirements