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Sinowell Flexstar Pro DLC Approved 645w 2.8umol/J 6500K+660nm Highest Efficacy Higher than Gavita Pro 1700e Led Grow Light, US $ 349 - 499 / Set, Online Technical Support, Seed Starting, BLOOM, VEG, Full Spectrum, 400-700.Source from Sinowell (shanghai) Co.,ltd on Waimaotong.com.