Chapas Externas A linha de chapas externas Gypsum Weather Defense conta com a exclusiva tecnologia GWD, são ideias para fachadas, fechamentos externos pois são resistentes aos diversos tipos de intempéries. Map of gypsum deposits in northern Ohio, black squares show The situation of deposits, from "Geography of Ohio", 1923 Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050