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Nice! i've never seen sodium lamps with two arc tubes, very very cool!
Thank you very much and yes, there are also such and the option of a hot start can be useful as well as a long nominal lifespan.
Nice! i've never seen sodium lamps with two arc tubes, very very cool!
Thank you very much and yes, there are also such and the option of a hot start can be useful as well as a long nominal lifespan.