GB/T 23595.4-2025 Chinese PDF (GB /T23595.4-2025)GB T 23595. 4 2025_Chinese: Test methods of rare earth phosphors for LED Part 4: Determination of high temperature and high humidity property (Chinese: LED 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23595. 4 2025
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