Cement: Headquarters: Oman: Key people. Biswarup Kumar (COO) Products: Cement: Revenue: OMR (2018) Net income. OMR 340,000 (2018) Website: https:/// Raysut Cement is an Omani cement manufacturer. It is the largest cement producer in the sultanate. According to Global Cement Directory 2018, the company is the 92nd largest cement producer in the world based on .