GB/T 24671-2023 Chinese PDF (GB/T24671-2023) GB/T 29349-2023 GB/T 40681

GB/T 40681

GB/T 45277-2025_Chinese: Determination of nine primary aromatic amines in toys - Gas chromatography-mass spectrometry (Chinese: 玩具中9种初级芳香胺含量的测定 气相色谱-质谱联用法)

6-2024_Chinese: Determination of physical characteristics for cigarettes and filter rods - Part 6: Hardness (Chinese: 卷烟和滤棒物理性能的测定 第6部分：硬度)

GB/T 20936

GB/T 45678-2025_Chinese: General requirements for civil tethered unmanned aircraft system (Chinese: 民用系留无人机系统通用要求)

GB/T 24671-2023 Chinese PDF (GB/T24671-2023) GB/T 29349-2023 GB/T 40681GB T 24671 2023_Chinese: Agricultural irrigation equipment Graphical symbols for pressurized irrigation systems (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 24671 2023