GB/T 31814-2024 Chinese PDF (GB /T31814-2024) GB/T 14666-2025 English versions: GB 38031-2025

English versions: GB 38031-2025

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 20840

English versions: GB/T 35604-2025

33-2024_Chinese: Specifications for optical fibre test methods - Part 33: Measurement methods and test procedures for mechanical characteristics - Stress corrosion susceptibility (Chinese: 光纤试验方法规范 第33部分：机械性能的测量方法和试验程序 应力腐蚀敏感性参数)

GB/T 31814-2024 Chinese PDF (GB /T31814-2024) GB/T 14666-2025 English versions: GB 38031-2025GB T 31814 2024_Chinese: Frozen scallop (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31814 2024