Hi Friends , I am very honor to join the Rollitup and be a member.I can meet different comment and other members though. I really appreciate for the rollitup. I am a salesman for Amazon, I sale the LED plant light. But I never touch the product and I I have never worked in sales. so this is why I join the forum cos I need to learn much knowledge from here.About cannabis and how use the light to help the plants grow up. I don't know what is the cannabis(In china, It's illegal for us to plant the cannabis) and also don't know the LED grow light what they have the function . Sometime I think light just need sale ,other things are nothing to with me. But I was wrong, I need to change my mind. But through these days , I really learn from much knowledge from here. Thanks for the forum. So if you have any question about LED grow light and would like to buy them, Please tell me , I will happy to work with for you.