China National Standards

China characteristics—Definitions, GB Standards List

  •  China "characteristics—Definitions," GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    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    		 China National Standards
    characteristics—Definitions,
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