GB/T 5072-2023 Chinese PDF (GB/T5072-2023) GB/T 45542-2025 English versions: GB/T 45538-2025

English versions: GB/T 45538-2025

English versions: GB/T 36917

GB/T 44926-2024_Chinese: Nanotechnologies - Characterization of micro surface and sub surface - Optical dark-field confocal microscopy (Chinese: 纳米技术 微区表面及亚表面表征 光学暗场共焦显微法)

oil and solid-fuel burning appliances having electrical connections (Chinese: 家用和类似用途电器的安全 第94部分：带有电气连接的使用燃气、燃油和固体燃料器具的特殊要求)

GB/T 5072-2023 Chinese PDF (GB/T5072-2023) GB/T 45542-2025 English versions: GB/T 45538-2025GB T 5072 2023_Chinese: Refractory products Determination of cold compressive strength (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5072 2023