DESCRIPTION: Oil Refining: Optimal Maintenance Of Production Units. DMDS Is Used In Oil Refineries As A Sulfiding / Presulfiding Agent To Activate The Catalysts Of Hydrotreating Units. This Is An Indispensable But Delicate Operation. An On-Site Sulfiding Service Carried Out By Highly Qualified Technicians. Has Also Developed An Improved, Lower Odor Version Of DMDS Called DMDS Evolution.