Why would you buy something from the company that makes TaoTronics

?. jk
http://sanxinbao.en.alibaba.com/ is Evergrow who as far as "we know" gets contracted to build various company's LED designs, including some American companies and at one point and probably still VIPAR. MARS-Hydro is LG LED Solutions and slap their own label on it. Real information is hard to come by because of confidentiality agreements and LED salespeople's inability to speak the truth on days ending with "Y"

.
Do not go into China without a map peoples. It's a shitload bigger than you can ever guess and trying to figure out who makes who from pictures on the interwebs has FAIL written all over it in big bold Mandarin lettering

. Seriously.
These COB lights people around here use are ridiculously easy to build, don't worry about all the numbers a lot of growers throw around, they're pushing the envelope. Go with DIY COBs before you decide to beat the system by trying to grow using Chinese budget shite that only good growers with perfect environments get good results from . People around here are more than willing to help you build a COB and keep you from getting "Lost in Shenzhen".