China National Standards

China 1：Mill GB Standards List

  •  China "1：Mill" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 5237.1-2017 Aluminium alloy extruded profiles for architecture—Part 1：Mill finish profiles
    铝合金建筑型材 第1部分：基材    		 China National Standards
    1：Mill
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