Primoroso is a porcelain tile manufactured by White Horse Ceramic Industries in Pasir Gudang, Johor. Color Touch The purity of the Primoroso tiles and its light color and characteristic design, are the origin of Sandstone. Supplied in 300x600mm format with a matte finish. Suitable for floor and wall installations in residential and commercial interiors. Tiles are manufactured to MS ISO 13006 and certified by SIRIM.