Keyon Process is an engineering company and licensor of environmental protection technologies that commit to solve sulphurous and phosphoric acid emission problems. Our main business : technological proposal, engineering design, EPC, revamp of old unit and our own equipment manufacturing factory. We own a number of patented technologies: ECOSA®—Wet Sulfuric Acid Process; DSR—SO2 Amine Adsorption & Regeneration Process; ERSA™—Spent Acid Regeneration Process; S-Plus—Claus TGT Process;Phosphoric Acid Purification Technology; Phosphogypsum Decomposition & Recycling.