The Egreat Android player is a long way from a cheap projector from China. The A5 and A10 are discussed in various forums.
There are tons of non-name brands out there, and they are often garbage, with some others that have nice product, but those with nice product cost just as much as the name brands.
Why? Because a single LCD panel projector looks like crap and is the vast majority of garbage products out there.
They also lie, through their teeth, without remorse, about what their projector actually is capable of. Typically it is their contrast claim which is worst, and then their lumen claim is off by a factor of 3 to 10 fold. Think about what a ten fold lie means when the claim is 3,000 lumens. Projector Central reviewed several cheap Chinese projectors and they found that not one of them was appropriate for home theater use.
But, then you get a mode like the XGimi H1, which does look very good. It uses a Texas Instrument DLP Pico chip in it and delivers plenty of brightness for a 100"+ screen size in a small package from an unheard of Chinese company. Of course the projector is $900 (or so), which is the same price that other LED based projectors of decent quality cost, and it's nearly twice the price of the BenQ W1070a which is brighter and has better contrast.
At the end of the day, these models have all been value engineered by Epson, BenQ, Optoma, and others. They are all made in China to being with (or similar), so it's not like China is the issue. It's the actual cost involved in making a decent projector that runs cost up.