GB/T 15566.2-2024 Chinese PDF (GB /T15566.2-2024) GB 5009.268-2025 GB/T 18737

GB/T 18737

2-2025_Chinese: Assembled spectacles - Part 2: Power-variation prescription assembled spectacles (Chinese: 配装眼镜 第2部分：渐变焦定配眼镜)

33-2024_Chinese: Specifications for optical fibre test methods - Part 33: Measurement methods and test procedures for mechanical characteristics - Stress corrosion susceptibility (Chinese: 光纤试验方法规范 第33部分：机械性能的测量方法和试验程序 应力腐蚀敏感性参数)

31-2025_Chinese: National food safety standard - Determination of p-hydroxybenzoic acid esters in foods (Chinese: 食品安全国家标准 食品中对羟基苯甲酸酯类化合物的测定)

1) - Part 1: Specification of basic notation (Chinese: 信息技术 抽象语法记法一（ASN

GB/T 15566.2-2024 Chinese PDF (GB /T15566.2-2024) GB 5009.268-2025 GB/T 18737GB T 15566. 2 2024_Chinese: Public information guidance systems Setting principles and requirements Part 2: Airport (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 15566. 2 2024