... have Good quality material--quartz glass,long life 13000h, ozone type & ozone free type,CE,RoHS,ISO9001:2000 Features:High-power ... these chemicals before discharge to the environment.And the high output ozone UV lamps become a best choice to efficiently disinfect wastewater ... longer lifetime and improve UV output; High power and high UV output than normal UV lamps;High ozone types can produce hydroxyl ...