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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)
3-2025_Chinese: Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production - Part 3: Cracking-resistant CRAs(corrosion-resistant alloys) and other alloys (Chinese: 石油天然气工业 油气开采中用于含硫化氢环境的材料 第3部分：抗开裂耐蚀合金和其他合金)
1) - Part 1: Specification of basic notation (Chinese: 信息技术 抽象语法记法一（ASN
English versions: GB/T 45128-2025
English versions: GB/T 44024-2025
GB/T 45259-2025 Chinese PDF (GB /T45259-2025) GB/T 29912-2024 1-2025_Chinese: Semi-finished spectacle lens blanksGB T 45259 2025_Chinese: Travel risk management Guidance for organizations (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45259 2025
US$ 15.00
US$ 22.50
US$ 11.00
