GB/T 22919.10-2024 Chinese PDF (GB/T22919.10-2024) GB/T 23191-2023 2-2025_Chinese: Optics and photonics -

2-2025_Chinese: Optics and photonics - Specifications for telescopic sights - Part 2: High-performance instruments (Chinese: 光学和光子学 瞄准望远镜规范 第 2 部分：高性能仪器)

English versions: GB/T 45381-2025

6-2024_Chinese: Antimicrobial and cleaning function of household and similar electrical appliances - Part 6: Particular requirements for air conditioner (Chinese: 家用和类似用途电器的抗菌、除菌、净化功能 第6部分：空调器的特殊要求)

3-2023_Chinese: Petroleum and natural gas industries - Glass-reinforced plastics (GRP) piping - Part 3: System design (Chinese: 石油天然气工业 玻璃纤维增强塑料管 第3部分：系统设计)

English versions: GB/T 20279-2024

GB/T 22919.10-2024 Chinese PDF (GB/T22919.10-2024) GB/T 23191-2023 2-2025_Chinese: Optics and photonics -GB T 22919. 10 2024_Chinese: Aquatic feed Part 10: Formula feed for tilapia (Chinese: 10) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 22919. 10 2024