They got a strange system... where I must use their website to communicate with a seller.
It might take a few days before 1st response. Be patient? It might take weeks to resolve a simple issue. Then the site completes the transaction automatically.
After that, it's impossible to get your money back.
It ain't Amazon.com for sure. If possible, I'd use eBay instead of Aliexpress unless a seller is known to have good reputation.
Just my 2 cents. It's pretty much one way shipping and one way money flowing.
The order of my liking is Fluorescent > LED panels > the Comer copy based on the green tint testing.
The Comer ergonomic design... sucks, too. Front heavy. Hard to adjust and lock the angle. Next time... I will do more research before buying a new gear.