... ISO9001:2000,CCC test black stained glassTermsDescriptionFeatures1 .Smooth and flat surface and good vision 2 .Excellent optical performance 3 .Stable ... tin, the glass under the works of gravity and surface tension becomes smooth and flat at both sides.5,Stained glass ... , Obscure glass, Sandblasted glass, Solar glass, Ultra clear low iron glass, Low-E glass, Obscure glass, Glass block, Glass brick, ...