400~520nm (blue) – This wavelength can directly develop plant roots and stems, and has the largest absorption ratio of chlorophyll and carotenoids and the greatest impact on photosynthesis. Cob Cree Led Grow Light, Smart Grow Light , Uv Ir Grow Light , Grow Light For Greenhouse ,Seedling Led Grow Light . Before understanding how to cultivate plants, we must first know the most necessary conditions for plant growth. Of course, sunshine, air, and water are indispensable, but how much sunlight and how much moisture you need, this requires your attention. The product will supply to all over the world, such as Europe, America, Australia,Swedish, Bangladesh,Lyon, India.At present, the sales market of LED grow lights is also concentrated in Japan, South Korea, Central America, Europe and other countries and regions with fewer agricultural personnel.