GB/T 31114-2024 Chinese PDF (GB /T31114-2024) GB/T 21369-2024 2-2025_Chinese: Plastics - Impact-resistant polystyrene

2-2025_Chinese: Plastics - Impact-resistant polystyrene (PS-I)moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties (Chinese: 塑料 抗冲击聚苯乙烯（PS-I）模塑和挤出材料 第2部分：试样制备和性能测定)

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)

English versions: GB/T 32440

English versions: GB/T 22939

GB/T 24212-2025_Chinese: Methylnaphthalene oil (Chinese: 甲基萘油)

GB/T 31114-2024 Chinese PDF (GB /T31114-2024) GB/T 21369-2024 2-2025_Chinese: Plastics - Impact-resistant polystyreneGB T 31114 2024_Chinese: Quality requirement for ice cream (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31114 2024