GB 20052-2024 Chinese PDF GB/T 45471-2025 GB/T 33796-2025_Chinese: General technical requirement

GB/T 33796-2025_Chinese: General technical requirement of thermoplastic starch (Chinese: 热塑性淀粉通用技术要求)

2-2025_Chinese: Optics and photonics - Test methods for telescopic systems - Part 2: Binoculars (Chinese: 光学和光子学 望远镜系统试验方法 第2部分：双筒望远镜)

headed (Chinese: 成型模 带头导套和带头定位导套)

GB/T 27069-2025_Chinese: Guidelines for the mutual recognition evaluation of product conformity assessment results (Chinese: 产品合格评定结果相互承认评价指南)

English versions: GB/T 45134-2025

GB 20052-2024 Chinese PDF GB/T 45471-2025 GB/T 33796-2025_Chinese: General technical requirementGB 20052 2024_Chinese: Minimum allowable values of energy efficiency and the energy efficiency grades for power transformers (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 20052 2024