Industrial drying cabinets for drying paint; industrial drying cabinets for material treatment; drying cabinets for industrial use, namely, industrial drying apparatus for use in aeronautical, automotive, plant equipment, construction, comfort, electronic, energy, railway, furniture and auxiliary industries; industrial ovens, namely, curing ovens for industrial use, convection oven in the nature of industrial force drying ovens, industrial powder coating ovens, industrial paint drying ovens