Continuous and stationary spray washing and phosphating machines by overhead chain conveyors; powder electrostatic paint booths by water curtain, dry and wet; greenhouses for polymerization of powder paint and drying of liquid paint; continuous greenhouses ; automatic powder sifters and conveyors; concrete mixers; scale collectors for machine boilers; fans for the compression, suction and transportation of grains; pneumatic transport installations by tube; machines for painting and spray pain...