GB/T 20552-2023 Chinese PDF (GB/T20552-2023) GB/T 45565-2025 307-2025_Chinese: National food safety standard

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)

1-2024_Chinese: Explosive atmospheres - Electrical resistance traces heating - Part 1: General and testing requirements (Chinese: 爆炸性环境 电阻式伴热器 第1部分：通用和试验要求)

English versions: YY/T 1284-2024

GB/T 29077-2024_Chinese: Launch-vehicle-to-spacecraft flight environments telemetry data processing requirement (Chinese: 星箭界面飞行环境遥测数据处理要求)

GB/T 20552-2023 Chinese PDF (GB/T20552-2023) GB/T 45565-2025 307-2025_Chinese: National food safety standardGB T 20552 2023_Chinese: Pacific oyster (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20552 2023