GB 20052-2024 Chinese PDF GB/T 45471-2025 1-2025_Chinese: Mobile laboratory - Part

1-2025_Chinese: Mobile laboratory - Part 1: General rule (Chinese: 移动实验室 第1部分：通则)

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)

English versions: GB/T 45134-2025

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)

GB 20052-2024 Chinese PDF GB/T 45471-2025 1-2025_Chinese: Mobile laboratory - PartGB 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