Symbolic designation of direction of opening and closing and faces of doors and windows
NEQ ISO R1226-1970
中国建筑技术发展中心中国建筑标准设计研究所
This standard is the original Chinese electronic standard. After you successfully purchase, we will send the electronic version of this standard to your email address. If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.
