GB/T 39938-2021
China national
standard english version:
GB
中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 39938-2021
Electric room heating—Underfloor heating—Performance characteristics—Definitions, method of testing, sizing and formula symbols 室内电取暖 地暖 性能特征 定义、测试方法、尺寸和公式符号
Issued Date:2021/3/9
Implemented Date:2021/10/1
Issued by:
The Standardization Administration of the People's Republic of China