"Factory" in China can mean a whole number of different things, from huge industrial installation to single friendless dude sat in a corner of his living room with a box of bits.
That just demonstrates consistency not quality or value.
Something I get royally hacked off about on most forums is the ability for resellers to leap on everything they see shouting "buy ours theirs is crap" when in reality most of the laser based gear is turned out by around 6 factories in the whole of China. I actually had one company rep slagging off another companies products the other day in email, what they didn't realise is I have been to the factory and know that BOTH products are made by the same third party on the same production line.
I didn't actually read it either, just my imagination..but if i did i agree with the above post from spooky there only being 6 companies that make the vast majority of laser stuff in China with heaps of distributers