HGI additives, developed by the Rezel, can help the dispersion of hydrodesulphurized inherent insoluble suspended solids, and also have anti-coalescence effect. HGI additive prevent polymerization of olefins, diolefins etc. and have antioxidant effect at the same time. Rezel-HGI Passivate metal surface, enhance anti-corrosion, and effect with anti fouling and cleaning.