VACUUM VIEWPORT Manufacturers     chambers     electrical feedthroughs     mechanical feedthroughs     fittings, flanges     vacuum components         Europe, Middle East and Africa     North and South America     Asia Pacific      China     India     LASER OPTEX INC. - www.laseroptex.com - Zhong 4 lou 202#,Hai dian Na Lu, 100080 Beijing, China Adam Wang, Email: sales@laseroptex.com Tel. +86-10-62634557, Fax +86-10-62560326 Products:   viewports a wide range of competitively priced UHV, Conflat-, ISO- or KF- viewports including a variety of coatings to enhance performance. Laser Optex Inc. uses advanced techniques for control of special and critical processes, including 100 percent helium leak testing and x-ray measurements for metallization control. Windows Materials include: Fused silica, Quartz , Sapphire , MgF2 , BaF2 , CaF2 , ZnSe ,ZnS ,Ge, Si ,Pyrex Coating including Single QWOT, Broad Band AR, V coatings, ITO, DLC (Diamond like coating) and a range of custom coatings can be applied. Standard Viewing diameters from .55" to 1.94 " , custom vacuum viewport are available upon request.     www.vacuum-guide.com     Keywords