"Non-metallic and Composite Air Ducts" is now approved as the product standard for the construction industry industry, numbered JG/T258-2018, and will be implemented from May 1, 2019. The original "Non-metallic and Composite Air Ducts" (JG/T258-2009) was abolished at the same time. This standard is made public on the website of the Ministry of Housing and Urban-Rural Development (www.mohurd.gov.cn), and is published and distributed by the China Standards Press organized by the Standards Quota Research Institute of the Ministry of Housing and Urban-Rural Development. Ministry of Housing and Urban-Rural Development of the People's Republic of China November 16, 2018
JG/T 258-2018 history
2018JG/T 258-2018 Non-metallic and composite air ducts
2010JG/T 258-2009 Non-metallic and composite air duct