MSI's product line includes an extensive offering of Granite , Quartz , Porcelain , Luxury Vinyl flooring , Slate , Marble , Travertine , Sandstone , Limestone , Quartzite , onyx , stacked stone and pavers imported from over 36 countries on six continents. About MSI: Founded in 1975, MSI is a leading supplier of flooring tile , countertops , wall and backsplash tile and hardscaping surfaces products in North America.