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you can usually tell if the bulbs are either decent quality or cheap chinese crap if you look at the bulb closely. there should be a little bubble where there are salts inside. look at that bubble and if there is barely any salt in there, it is usually a sign of a lower quality bulb. take a look at both bulbs and see if the salts in each bulb are about the same amount. usually, cheaper bulbs have bad QC and the salts would differ in each bulb.
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