Petrochemical equipment, namely, drilling rigs, oil refining machines, oil-well pumping machines; water scrubber, in the nature of industrial scrubbers for removing water soluble contaminants from the air; filters being parts of engines; heat exchangers being parts of machines; filters being parts of machines or engines for use in water treatment and plastics processing; machines for manufacturing sulfuric acid; molds being parts of machines for processing plastics; liquid reservoirs not of m...