* Lampholders for fluorescent lamps: linear T5, T8, T12 and T2 with reduced dimensions, circular, Slimline, HO (High Output) and VHO (Very High Output) lamps with high luminous efficiency, "U" shaped lamps and compact. * Lampholders for different kinds of tungsten halogen incandescent lamps both for main voltages and for extra low voltages. Tungsten halogen incandescent lamps are particularly suitable for internal lighting. * Lampholders for halide vapour, sodium vapour discharge lamps both single and double capped. Discharge lamps are mainly used for lighting of large areas (large squares, industrial sheds, fair halls, sport grounds, swimming pools).