GB/T 5686.5-2023 Chinese PDF (GB/T5686.5-2023) GB/T 45284.4-2025 GB/T 19652-2023_Chinese: Discharge lamps (excluding

GB/T 19652-2023_Chinese: Discharge lamps (excluding fluorescent lamps) - Safety specifications (Chinese: 放电灯（荧光灯除外） 安全规范)

GB/T 44115

English versions: GB/T 42257-2022

film and photographic studios(outdoor and indoor) (Chinese: 灯具 第2-17部分：特殊要求 舞台灯光、电视、电影及摄影场所(室内外)用灯具)

GB/T 5686.5-2023 Chinese PDF (GB/T5686.5-2023) GB/T 45284.4-2025 GB/T 19652-2023_Chinese: Discharge lamps (excludingGB T 5686. 5 2023_Chinese: Ferromanganese, ferromanganese silicon, nitrogen bearing ferromanganese and manganese metal Determination of carbon content The Infrared absorption method, the gasometric method, the gravimetric method and the coulometric method (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5686. 5 2023