Profile: Southwestern Sales Co. is engaged in producing agricultural curtains. We make tarpaulins of all varieties including lumber tarps, steel tarps, asphalt tarps and roll tarps. Our truck tarp line also includes tarps for side kits as well as replacement tarps for automatic tarping systems. We produce high quality custom vinyl truck tarps for dump trucks, lumber, steel, machines and flatbeds. We also carry tarp bows, tarp system parts and hardware as well as rubber straps.