GB/T 44931-2024 Chinese PDF (GB /T44931-2024) GB/T 13522-2024 GB/T 44922-2024_Chinese: Additive manufacturing -

GB/T 44922-2024_Chinese: Additive manufacturing - Qualification principles - Qualifying machine operators of laser metal powder bed fusion machines and equipment used in aerospace applications (Chinese: 增材制造 鉴定原则 航空航天用金属激光粉末床熔融设备操作人员资格鉴定)

GB/T 17818-2025_Chinese: Determination of vitamin D3 in feeds - High-performance liquid chromatography (Chinese: 饲料中维生素D3的测定 高效液相色谱法)

GB/T 27534

1-2024_Chinese: Variable-frequency drive of 1 kV and below - Part 1: Technical conditions (Chinese: 1 kV及以下通用变频调速设备 第1部分：技术条件)

English versions: GB/T 18867-2025

GB/T 44931-2024 Chinese PDF (GB /T44931-2024) GB/T 13522-2024 GB/T 44922-2024_Chinese: Additive manufacturing -GB T 44931 2024_Chinese: Nanotechnologies Generation of metal nanoparticles for inhalation toxicity testing Evaporation condensation 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 44931 2024