1.soundproof,waterproof,fireproof,heat insulation 2.insulationg double safety glass 3.ISO9001:2000 1. 1.2MM for frame and door leaf.2.Easy to install and clean3. Sound and Heat insulation4. Excellent protection against weather, water proof5.Elegant appearance and excellent structure design6.Soundproof ,waterproof,heat insulation,airtight excellent, save energy7.suitable for villa and hotel,looks ...