120W LED plant growth,The general ratio of wavelength 660nm and 450nm is 8:1,And you can choose 630nm for lower price. 120W LED plant growth,The general ratio of wavelength 660nm and 450nm is 8:1,And you can choose 630nm for lower price.All of our peoducts have CE certification,and thay have good quality with lower priceISO9000.CE.