New Options on Green Squared and an Innovative Mortar That Sets in Hours
CTDA's Tiledealer Blog
FEBRUARY 23, 2012
The NSF certification process includes a comprehensive documentation review and onsite facility audit to verify conformance to the standard upon which the Green Squared certification program is based, ANSI A138.1 American National Standard Specifications for Sustainable Ceramic Tiles, Glass Tiles and Tile Installation Materials.
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