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China GB Standards List

 GB/T 4988-2016  
electric products for ships and offshore units—Ratings of frequency,voltage and current

船舶和近海装置用电工产品 额定频率、额定电压和额定电流
 GB/T 32891.1-2016  
Rotating electrical machines—Efficiency classes (IE code)—Part 1: Line operated AC motors

旋转电机 效率分级(IE代码) 第1部分:电网供电的交流电动机

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