GB/T 25774.3-2023 Chinese PDF (GB/T25774.3-2023) GB/T 18281.1-2024 English versions: GB/T 44999-2024

English versions: GB/T 44999-2024

3-2023_Chinese: Implants for surgery - Hydroxyapatite - Part 3: Chemical analysis and characterization of crystallinity ratio and phase purity (Chinese: 外科植入物 羟基磷灰石 第3部分：结晶度和相纯度的化学分析和表征)

2-2024_Chinese: Gears - FZG test procedures - Part 2: FZG step load test A10/16

English versions: GB/T 45402-2025

2-2024_Chinese: Textiles - Determination of perfluorinated and polyfluorinated compounds - Part 2: Gas chromatography-mass spectrometry method (Chinese: 纺织品 全氟及多氟化合物的测定 第2部分：气相色谱-质谱法)

GB/T 25774.3-2023 Chinese PDF (GB/T25774.3-2023) GB/T 18281.1-2024 English versions: GB/T 44999-2024GB T 25774. 3 2023_Chinese: Test methods for welding consumables Part 3: Preparation and testing of a fillet weld specimens for T joint (Chinese: 3T) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25774. 3 2023