GB/T 33757.2-2024 Chinese PDF (GB/T33757.2-2024) GB/T 22838.5-2024 4-2024_Chinese: Petroleum and natural gas

4-2024_Chinese: Petroleum and natural gas industries - Bends

73-2025_Chinese: National food safety standard - Nutrition fortifier - Sodium chloride (Chinese: 食品安全国家标准 食品营养强化剂 氯化钠 )

3-2024_Chinese: Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 66 kV(Um=72

4-2025_Chinese: Assembled spectacles - Part 4: Multifocal and power-variation near-vision spectacles (Chinese: 配装眼镜 第4部分：多焦和渐变焦老视成镜)

GB/T 33757.2-2024 Chinese PDF (GB/T33757.2-2024) GB/T 22838.5-2024 4-2024_Chinese: Petroleum and natural gasGB T 33757. 2 2024_Chinese: Energy saving ratio for distributed energy system of combined cooling, heating and power Part 2: Multi energies hybrid driven systems (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 33757. 2 2024