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English versions: GB/T 17817-2024
1-2023_Chinese: Ergonomic principles related to mental workload - Part 1: General terms and methods for measuring and assessing mental workload (Chinese: 与心理负荷相关的工效学原则 第1部分：心理负荷术语与测评方法)
1-2025_Chinese: Plastics - Impact-resistant polystyrene(PS-I) moulding and extrusion materials - Part 1: Designation system and basis for specifications (Chinese: 塑料 抗冲击聚苯乙烯（PS-I）模塑和挤出材料 第1部分：命名系统和分类基础)
English versions: GB/T 23453-2025
English versions: GB/T 45617-2025
GB/T 3880.2-2024 Chinese PDF (GB/T3880.2-2024) GB/T 44976-2024 English versions: GB/T 17817-2024GB T 3880. 2 2024_Chinese: Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering Part 2: Mechanical properties (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 3880. 2 2024
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