7 Oil refining machines; Chemical handling machines, namely, blending machines for chemical processing, granulating machines for chemical processing; Sorting machines for chemical processing; Filtering machines for chemical processing; Centrifugal compressors; Gas turbines not for land vehicles; Heat exchangers being parts of machines; Pumps, compressors and blowers, namely, circulating pumps, centrifugal pumps, axial-flow pumps, pump impellers, gas compressors, centrifugal compressors, air compressors, compressors for machines, axial-flow compressors, pumps and compressors as parts of machines, motors and engines, centrifugal blowers, axial-flow blowers, power-operated blowers, blowing machines for the compression, exhaustion and transport of gases; Rotary pumps; Rotary compressors; Rotary blowers; Machines and machine tools for treatment of materials and for manufacturing, namely, metal working machines, plastic processing machines; Material production and processing machines, namely, rubber processing machines, sintering machines for chemical processing, calcining machines for chemical processing, blending machines for chemical processing, granulating machines for chemical processing; Rotary electrical machines, namely, electric rotary cutting machines; Brick making machines; Industrial chemical reactors; Reactors for use in the chemical industry, namely, Industrial chemical reactors