China 'GB/T 39938-2021
' standard english version:
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
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