GB/T 43320-2023 Chinese PDF (GB/T43320-2023) GB/T 45600-2025 1-2025_Chinese: Semi-finished spectacle lens blanks

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 20393-2024_Chinese: General technical requirements for products with natural color cotton and mixture of natural color cotton (Chinese: 天然彩色棉制品及含天然彩色棉制品通用技术要求)

English versions: GB/T 20972

GB/T 21395-2024_Chinese: Dimethyl sulfoxide (Chinese: 二甲基亚砜)

2-2024_Chinese: Mechanical structures for electrical and electronic equipment - Outdoor enclosures - Part 2: Coordination dimensions (Chinese: 电气和电子设备机械结构 户外机壳 第2部分：协调尺寸)

GB/T 43320-2023 Chinese PDF (GB/T43320-2023) GB/T 45600-2025 1-2025_Chinese: Semi-finished spectacle lens blanksGB T 43320 2023_Chinese: Non destructive testing of welds Ultrasonic testing Use of automated phased array technology for thin walled steel components (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 43320 2023