7 Controlled volume pumps, rotary pumps, suction pumps, gear pumps, screw pumps, regenerative pumps; high pressure cleaning machines; pneumatic and hydraulic machines, namely, turbines, blowers, compressors, disintegrators, gas expanders, wind tunnels, aerators; starters for motors and engines; electric generators; composting and fermentation machines for use in the disposal of solid and liquid waste; dewatering pumps; sedimentation and separation equipment, namely, centrifuges, classifiers, heavy media separators; silencers for engines; transmission for machine operation; vacuum cleaners; coupling for machines; valves for pumps; air filters for mechanical purposes; filters for motors and gas engines; solid separator device, namely, a separator body, an impeller and motor used to separate sand, silt and other solid particles from the water; metal working machines for pressing, forming and cuffing metal; machines for manufacturing and cleaning semiconductors and silicon wafers; washing machines for industrial purposes; sewage and refuse compressors, crushers and disposal units; and structural and replacement for all of the aforesaid goods