China National Standards

China 9：Telecommunications GB Standards List

  •  China "9：Telecommunications" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 4728.9-2008 Graphical symbols for diagrams - Part 9：Telecommunications - Switching and peripheral equipment
    电气简图用图形符号 第9部分：电信 交换和外围设备    		 China National Standards
    9：Telecommunications
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