Ive already been down this path. Check any of the 4x4 forums and you’ll discover that there isnt a single Chinese manufactured light bar that comes even close to comparing to name brand versions. Having said that, you probably wont be able to produce a light bar for less money than a good name brand version if you are expecting the same type of reliable high performance (lumens, efficiency, beam pattern, heat sinking).
IMO, the Chinese versions arent worth the price of aluminum scrap… save your money. If you arent sure, check out many of the dozens of reviews that show what complete rubbish they are.
My light bar build might give you some ideas.
edit: I see that you’ve already been there.