Electric motors; reduction gears and gear motors (engine components) for screw feeders; Archimedean screw pumps, screw conveyors; screw feeders; shaft less screw; screw pumps; batching plants for slaked lime; machines for preparing limewash of poly electrolytes; agitators for anaerobic digesters; feeders, screw mixers, namely rotary mixing machines for powdered materials for industrial purpose; machine and machine parts for the feeding and the batching of granular, powder and liquid; valves as a parts of machines; valves actuators as parts of machines; filtering machines; dust removing installations for cleaning purposes; filters being parts of machines or engines; dust exhausting installations for cleaning purposes; machines for breaking cement bags; bag compactors; machine to fill and to empty bags; materials loading and unloading devices in stores or silos.;