Lolol you get what you pay for. Cheap China quantum boards are not quantum boards. They are knock offs. Alibaba is sketchy. They are made of subpar components. Boards are not sealed. Cheap heatsinks. Usually cheap diodes. Maybe get some decent ones but it's totally worth the extra to buy an
hlg. Plus it actually comes with a warranty. I would never trust some crazy guy in China sitting in a warehouse pushing awful garbage products online all day. Most of cheap China lights are produced in the same places. They just use different cases and such. If you want a deal, goto eBay and buy a quantum board for a slight discount, already assembled (and like trash mind you) exposed wires and non sealed boards, and rebrandwd as some basement brand lighting company.