Chosun Refractories Co.,Ltd. manufactures and sells refractory products. Its offerings include shaped refractories such as alumina, fireclay, silicon carbide, special, acid-proof and heat-resistant, insulating fire, and magcarbon; monolithic refractories including castables, gunning refractories, plastic refractories, ramming mix and induction furnace, blast furnace runner refractories, ladle and tundish refractories, flame-gunning repair refractories, mortar, and casting blocks; slide gate valves comprising top, collector, porous, and sliding nozzles; and sliding nozzle plates. The company also provides continuous casting nozzles such as shroud, long stopper, and submerged nozzle. Founded in 1947, it is based in Kwangyang, South Korea.