Home / Standards / GB 27995.1-2011 GB 27995.1-2011 Abolished Semi-finished spectacle lens blanks - Part 1: Specifications for single-vision and multifocal lens blanks 半成品眼镜片毛坯 第1部分：单光和多焦点眼镜片毛坯规范 Standard Type GB ICS 11.040.70 CCS Y89 Status 废止 Issue Date 2011-12-30 Implementation 2012-12-01 Responsible Dept 工业和信息化部 Drafting Unit N/A