GB/T 33920-2025 Chinese PDF (GB /T33920-2025) GB 31604.61-2025 GB/T 17812-2025_Chinese: Determination of vitamin

GB/T 17812-2025_Chinese: Determination of vitamin E in feeds - High performance liquid chromatography (Chinese: 饲料中维生素E的测定 高效液相色谱法)

GB 30720-2025_Chinese: Minimum allowable values of energy efficiency and energy efficiency grades for gas cooking appliances (Chinese: 燃气灶具能效限定值及能效等级)

302-2025_Chinese: National food safety standard - Determination of Nonylphenol in Food (Chinese: 食品安全国家标准 食品中壬基酚的测定)

GB/T 14478-2025_Chinese: Basic technical specification of inlet valves for large and medium-sized hydraulic turbines (Chinese: 大中型水轮机进水阀门基本技术规范)

English versions: GB/T 30889-2024

GB/T 33920-2025 Chinese PDF (GB /T33920-2025) GB 31604.61-2025 GB/T 17812-2025_Chinese: Determination of vitaminGB T 33920 2025_Chinese: Test method for flexible graphite sheets (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 33920 2025