Aerators being machines; aerocondensers; agitators for chemical processing; air condensers; machine parts, namely, blade holders; boiler tubes being parts of machines; centrifugal machines; control mechanisms for machines, engines or motors elevating apparatus, namely, elevating work platforms; filtering machines for chemical processing; lifting apparatus, namely, hydraulic lifting mechanisms; Separating machines for chemical processing; stands for machines; valves being parts of machines, na...