The "Industrial TV System Engineering Design Standard" is now approved as a national standard, numbered GB/T50115-2019, and will be implemented from December 1, 2019. The original national standard "Code for Design of Industrial TV System Engineering" (GB50115-2009) will be abolished at the same time. This standard is published on the website of the Ministry of Housing and Urban-Rural Development (www.mohurd.gov.cn), and is published by the China Planning Publishing House organized by the Institute of Standards and Quotas of the Ministry of Housing and Urban-Rural Development. Ministry of Housing and Urban-Rural Development of the People's Republic of China August 12, 2019
GB/T 50115-2019 history
2019GB/T 50115-2019 Industrial TV system engineering design standards
2009GB 50115-2009 Code for design of industrial television system