Since 1996 Rock Cement Industries manufacture and supply supply Hollow/ Solid/ Hourdi concrete blocks, Insulated Thermo Block sizes for 20 cm, 25 cm & 30 cm with a U-Value Certificate as per Estidama requirements and Interlocking tiles of the very highest quality. Our products, which are certified under ISO 9001-2008, ISO 14001-2004 and ISO 18001-2007 Quality Approved and manufactured in a wide range of shapes and sizes, using the most up-to-date German Technology.