Home / Standards / GB 27995.2-2011 GB 27995.2-2011 Abolished Semi-finished spectacle lens blanks - Part 2: Specifications for progressive power lens blanks 半成品眼镜片毛坯 第2部分：渐变焦眼镜片毛坯规范 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