China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

Open type hps ballasts and mh ballasts can only be installed in a waterproof sealed lamps use of internal or dry indoor environment, not on the outdoor open-air the potting ballast open ballast quartz sand and epoxy sealed overall flooding waterproof purpose, can be placed on the use of outdoor rain environment, but both hid ballasts are not allowed in the case of protection