Home / Standards / GB 7793-1987 GB 7793-1987 Abolished Hygienic standard of lighting and illumination in elementary and middle school 中小学校教室采光和照明卫生标准 Standard Type GB ICS 91.160.10 CCS C56 Status 废止 Issue Date 1987-05-12 Implementation 1988-03-01 Responsible Dept 国家卫生健康委 Drafting Unit N/A