GB/T 22371-2024 Chinese PDF (GB /T22371-2024) GB/T 23263-2024 4-2025_Chinese: Assembled spectacles - Part

4-2025_Chinese: Assembled spectacles - Part 4: Multifocal and power-variation near-vision spectacles (Chinese: 配装眼镜 第4部分：多焦和渐变焦老视成镜)

English versions: GB/T 28168-2025

5-2024_Chinese: Implants for surgery - Ultra-high-molecular-weight polyethylene - Part 5: Morphology assessment method (Chinese: 外科植入物 超高分子量聚乙烯 第5部分：形态评价方法)

307-2025_Chinese: National food safety standard - Determination of formaldehyde in foods (Chinese: 食品安全国家标准 食品中甲醛的测定)

2-2025_Chinese: Household electric direct-acting room heaters - Methods for measuring performance - Part 2: Additional provisions for the measurement of the radiant factor (Chinese: 家用直接作用式房间电加热器 性能测试方法 第2部分：辐射系数测量的附加规定)

GB/T 22371-2024 Chinese PDF (GB /T22371-2024) GB/T 23263-2024 4-2025_Chinese: Assembled spectacles - PartGB T 22371 2024_Chinese: Environmental protection requirements for facsimile machines and multi function composite facsimile machines (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 22371 2024