Anyone knows anything about Playart ACF-350 based on a F-3 or a F-7 Unit?

Dean Martin: Thanks for the correction. Yes, Playart F-7 is known, but the ACF 350 is a mistery. No information about this loco is available in Internet. Tail and front lights had been manualy modified, also skirts have been added, and this job can be done by a hobbist, but... but the roof is original, but different from your F-7. The only way to modify roof panels is modifying the original moulds, and this only can be made at factory. Note that first roof fan was replaced by a simple panel. And if you see the tail roof panel, this is different from a F-7. Looking inside roof there are not cuts and paste. All the roof was injected. Could this be a study prototype to produce the ACF-350 just by only modify the F-7 moulds?