I trust them. But I think it's generally believed that they are more a rebrander than a manufacturer. I have these Renogy panels. Other than the frame, they are the same as my JJN panels. The specs are the same. I pair them with my Renogy panels. If the prices are the same, I would pick the Renogy over the JJN panels because the frame is better. The Renogy frames are heavier and have rounded corners. Otherwise, I would just pick whatever was cheaper. Here's the listing for the JJN panels. Their normal price basically matches this sale price.

https://www.amazon.com/JJN-Monocrystalline-Efficiency-Battery-Caravan/dp/B09V4ZDJTJ/