China National Standards
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'2020'
China GB Standards List

 GB/T 39530-2020  
Thermal spraying—Nanostructured zirconia powder and coating preparation

热喷涂 纳米氧化锆粉末及涂层制备工艺技术条件
 GB/T 7260.503-2020  
Uninterruptible power systems (UPS)—Part 5-3: DC output UPS—Performance and test requirements

不间断电源系统(UPS) 第5–3部分:直流输出UPS 性能和试验要求

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