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Well, scuba-choice services them (I believe Palantic is their house brand afaik), but at this price point it's probably more cost effective to replace them every couple years than to bother with servicing them.
Can't tell if the reg is sealed? 2nd stages balanced? or quality of parts/fit, so I can't really accurately comment on it. Does it have CE certification for cold water diving (if that is a concern for you)?