خرد کردن nfgd nsynthetic ngypsum nlumps nfrozen
خرد کردن nfgd nsynthetic ngypsum nlumps nfrozen. United States Gypsum Company 1 Usg Rd Sweetwater, TX . United States Gypsum Company, incorporated in 1901, is one of the largest manufacturers and marketers of gypsumbased products in North America. The company offers SHEETROCK, which is a brand of gypsum panels.