Repair, maintenance and servicing of machines and mechanical devices for the wet treatment of fibers, yarns, textile materials and finished textile products, mechanical dyeing devices, mechanical pre- and after-treatment devices for the textile industry as well as bleaching machines; repair, maintenance and servicing of aspirators, essentially comprising pumps and pressure-resistant special steel containers; repair, maintenance and servicing of mechanical sample dyeing machines; repair, maintenance and servicing of parts of the aforementioned machines, devices and systems, namely, pumps, filters, fittings, filter inserts, winders, liquor bath couplings, fans; repair, maintenance and servicing of material carriers as accessories to dyeing machines, namely, cloth beams, packing cages, bobbin holders, combed top carriers, yarn package carriers, warp beam carriers, divider inserts; repair, maintenance and servicing of mechanical dye mixers; repair, maintenance and servicing of mechanical devices for the fully automatic preparation of textile auxiliaries and finishing liquors; repair, maintenance and servicing of filters as machine parts; repair, maintenance and servicing of measuring instruments, data output devices, switchgear, automatic control devices, controllers and monitoring devices, in particular for use in the textile industry, repair, maintenance and servicing of laboratory dyeing equipment, namely, laboratory dyeing equipment; repair, maintenance and servicing of switchgear and controllers as parts of aspirators; repair, maintenance and servicing of dosing apparatus, temperature recorders, automatic program controllers; repair, maintenance and servicing of computers, data memories, data recording devices and non-program-equipped machine-readable data carriers, computer systems for the control of dyeing machines, monitors and printers, rapid driers, pressure driers; repair, maintenance and servicing of heat exchangers, heating and cooling radiators; repair, maintenance and servicing of boiling plants as parts of machines and mechanical devices for the textile industry, repair, maintenance and servicing of parts of all the aforementioned goods