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English versions: GB/T 22454-2025
1-2025_Chinese: Semi-finished spectacle lens blanks - Part 1: Single-vision and multifocal (Chinese: 半成品镜片毛坯 第1部分：单焦和多焦)
GB/T 17817-2024_Chinese: Determination of vitamin A in feeds - High performance liquid chromatography (Chinese: 饲料中维生素A的测定 高效液相色谱法)
GB/T 22454-2025_Chinese: Enterprise modelling and architecture - Constructs for enterprise modelling (Chinese: 企业建模与体系结构 企业建模构件)
GB/T 18910
GB/T 45071-2024 Chinese PDF (GB /T45071-2024) GB/T 15972.33-2024 English versions: GB/T 22454-2025GB T 45071 2024_Chinese: Classification and gradation of protected areas (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45071 2024
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