DOWASYS

Vats of metal; metal vats and storage tanks for petroleum, benzene, gasoline, chemical products and industrial water: spacer sheets of metal, namely, metal sheets inserted into metal vats and storage tanks for dividing the vats and tanks into separate compartments

Vats not of metal and other than of concrete; non-metallic and plastic vats and plastic storage tanks for petroleum, benzene, gasoline, chemical products and industrial water

Installation and repair of tanks, particularly double-walled tanks; rustproofing