I have ever purchased 1 x 480w V3 quantum board from Yuanhui, I like them, they offer a good price for Samsung lm301h+Meanwell boards, I paid 262$ for 480w lm301h board + 90$ shipping. You can asked them to mix 3000K +4000k, good for seed to harvest. https://www.alibaba.com/product-detail/Yuanhui-fu...

Hi Bro, I have ever purchased 1 of 480w quantum board from Shenzhen Yuanhui Led Limited, it works great. Abby Zhang is the absolute best customer service. abby@yuanhui-led.com Whatapp is +86-15112513537 https://www.alibaba.com/product-detail/Yuanhui-Best-Selling-Product-480w-HL_62278677937.html?spm=...