HAN DOCK CHEMICAL COMPANY is one of the leading import agents of chemicals and is enjoying an excellent reputation through about thirty years' business experience.We specialize in following chemical materials; Magnesium Oxide, Calsium Sulfate, Magnesium Chloride & Ammonium Bicarbonate.Especially, we are the exclusive distributor in the Republic of Korea for Calcium Sulfate of United States Gypsum Company, the world's leading producer of gypsum.We are also the sole agent in the Republic of Korea for MagChem 40 ( MgO) of Martin Marietta Magnesia Specialties Inc., a subsidiary of Martin Marietta Materials, Inc. in USA.HanDock