These appear to be based on a common grow-light platform, probably out of Shenzhen, China.
The LED mix is customized for reef tanks, and then again for the group buy.
The manufacturers there will usually honor their warranty, but you have the two-way shipping costs and time.
Manufacturer name and/or US distributor name might be on the shipping boxes or the actual fixtures.
The form factor is so pervasive though that you could likely find sevice/repair in the US fairly easily, or DIY.
[url]www.ReefTank123.com[/url]
Product and practice evaluation systems. 150 gal mixed reef, RK2 skimmer, Iwaki, Vortech. 180 gal custom Starphire mixed reef.