Among Guoxin electronic ballast series, there are two models named 'King of Energy-Saving’, which are 320W and 175W for metal halide lamp. The lumen efficacy and power efficiency produced by 175W EB with 175W MH lamp has met and sometimes exceed those of 250W MB with 250W MH lamp. Thus,    GX/EB 175W MH is a perfect replacement for old conventional MB 250W MH.
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