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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)
English versions: GB/T 45290-2025
English versions: GB/T 45460-2025
English versions: GB/T 3903
English versions: GB/T 28791-2024
GB/T 22877-2023 Chinese PDF (GB/T22877-2023) GB/T 45288.1-2025 1-2025_Chinese: Semi-finished spectacle lens blanksGB T 22877 2023_Chinese: Paper, board, pulps and cellulose nanomaterials Determination of residue (ash content) on ignition at 525 (Chinese: 525) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 22877 2023
US$ 109.50
US$ 115.00
US$ 129.50
US$ 174.50
US$ 109.50
US$ 149.50
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