GB/T 39943-2021.Performance requirements for LED lighting chains. GB/T 39943规定了电源电压不超过250V、使用LED光源的灯...
GB/T 39943-2021 LED灯串性能要求
GB/T 39943-2021.Performance requirements for LED lighting chains. 1范围 GB/T 39943规定了电源电压不超过250V.使用LED...