GB/T 45251-2025 Chinese PDF (GB /T45251-2025) GB/T 39141.4-2024 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)

GB/T 35560-2025_Chinese: Tourism services for elderly tourist specification - Tourist attraction (Chinese: 老年旅游服务规范 景区)

GB/T 13000-2025_Chinese: Information technology - Universal coded character set(UCS) (Chinese: 信息技术 通用编码字符集（UCS）)

English versions: GB/T 45264-2025

GB/T 45251-2025 Chinese PDF (GB /T45251-2025) GB/T 39141.4-2024 2-2025_Chinese: Plastics - Impact-resistant polystyreneGB T 45251 2025_Chinese: Internet finance Online consumer lending Guidance on post loan collection risk control (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45251 2025