Netvouz / lespet / tag / 2specific http://www.netvouz.com/lespet/tag/2specific?feed=rss lespet's bookmarks tagged "2specific" on Netvouz Invisible bifocal lens http://www.alibaba.com/product-gs/208229593/Invisible_bifocal_lens.html Invisible bifocal -Specification   1)Reflative index:N=1.499   2Specific Gravity:1.32   3)Demeter: 70mm/28mm   4)Abble Value=58   5)Transmission: over 91% biznes lespet Tue, 28 Oct 2008 12:55:15 GMT