China 'GB/T 4798.4-2023
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 4798.4-2023
Classification of environmental conditions Classification of environmental parameter groups and their severity levels Part 4: Stationary use in places without weather protection 环境条件分类 环境参数组分类及其严酷程度分级 第4部分:无气候防护场所固定使用
Issued Date:2023/5/23
Implemented Date:2023/12/1
Issued by:
The Standardization Administration of the People's Republic of China