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 | 630W CMH (dual 315) low frequency square wave dimming ballast utilizes Fuzzy Logic technology. The patent technology can keep lumen maintenance rate... |  |
 | CMH-315W/N non dimming low frequency square wave digital CMH ballast utilizes patent Fuzzy Logic ballast technology. The ballast keeps lumen... | |
 | CMH-315W/N non dimming low frequency square wave digital CMH ballast utilizes patent Fuzzy Logic ballast technology. The ballast keeps lumen... |  |