GB/T 45243-2025 Chinese PDF (GB /T45243-2025) GB/T 19048-2024 GB/T 45071-2024_Chinese: Classification and gradation

GB/T 45071-2024_Chinese: Classification and gradation of protected areas (Chinese: 自然保护地分类分级)

GB/T 45402-2025_Chinese: Smart city - City intelligent center - Reference architecture (Chinese: 智慧城市 城市智能中枢 参考架构)

GB/T 22321

GB/T 45349-2025_Chinese: Reference architecture of network collaborative manufacturing service platform supporting mass customization (Chinese: 支持大规模定制生产的网络协同制造服务平台参考架构)

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 45243-2025 Chinese PDF (GB /T45243-2025) GB/T 19048-2024 GB/T 45071-2024_Chinese: Classification and gradationGB T 45243 2025_Chinese: Determination of thiamine, riboflavin, pyridoxine, niacin, niacinamide and caffeine in health foods (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45243 2025