GB/T 29335-2024 Chinese PDF (GB/T29335-2024) GB/T 20882.1-2025 4-2023_Chinese: Petroleum and natural gas

4-2023_Chinese: Petroleum and natural gas industries - Glass-reinforced plastics (GRP) piping - Part 4: Fabrication

English versions: GB/T 45393

GB/T 22802-2024_Chinese: Household food waste disposers (Chinese: 家用废弃食物处理器)

GB/T 45465

20-2025_Chinese: Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method (Chinese: 钨精矿化学分析方法 第20部分：汞含量的测定 固体进样直接测定法)

GB/T 29335-2024 Chinese PDF (GB/T29335-2024) GB/T 20882.1-2025 4-2023_Chinese: Petroleum and natural gasGB T 29335 2024_Chinese: General quality requirements for twist off caps of food containers (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 29335 2024