SAC LLC is the largest manufacturer of Oil-field Minerals in Oman. Started in 2011, SAC is a Omani SME company owned by Oman Oilfield Supply Centre LLC (OOSC) and Al Mashriq Trading & Investment (AMTI). ... Barite and Bentonite manufactured by SAC are API 13A Certified since 2013 and the facilities are Environment, Quality, and HSE ...