GB/T 20835-2024 Chinese PDF (GB/T20835-2024) GB/T 45601-2025 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 2900

English versions: GB/T 45083-2024

GB/T 14536

1-2023_Chinese: Plastics - Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion materials - Part 1: Designation system and basis for specifications (Chinese: 塑料 超高分子量聚乙烯（PE-UHMW）模塑和挤出材料 第1部分：命名系统和分类基础)

GB/T 20835-2024 Chinese PDF (GB/T20835-2024) GB/T 45601-2025 2-2025_Chinese: Plastics - Impact-resistant polystyreneGB T 20835 2024_Chinese: Guide for magnetization test of generator stator core (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20835 2024