GB/T 23528.4-2025 Chinese PDF (GB /T23528.4-2025) GB/T 18216.12-2025 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)

English versions: GB/T 24045-2024

GB/T 15604-2024_Chinese: Terminology for dust explosion prevention and protection (Chinese: 粉尘防爆术语)

GB/T 32873-2025_Chinese: Requirements for basic information of electronic commerce subject (Chinese: 电子商务主体基本信息要求)

and the use of cast irons (Chinese: 石油天然气工业 油气开采中用于含硫化氢环境的材料 第2部分：抗开裂碳钢、低合金钢和铸铁)

GB/T 23528.4-2025 Chinese PDF (GB /T23528.4-2025) GB/T 18216.12-2025 2-2025_Chinese: Plastics - Impact-resistant polystyreneGB T 23528. 4 2025_Chinese: Quality requirements for oligosaccharides Part 4: Isomaltooligosaccharide (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23528. 4 2025