LED Grow Light, Full Spectrum 30W Plant Grow Lamp with Optical Lens for High PPFD, Ideal for Various Indoor Plants, E26 Base. Secondary Optical Design PPF: 42 umol/s, PPFD: 60.19 μmol/s/㎡@1FT. Patented COC Technology Chip on Ceramic: 's patented technology replaces the traditional Mcpcb aluminum substrate with a non-conductive ceramic heat sink, and directly solder the LED chip on the ceramic heat sink, effectively reducing the system’s thermal resistance between the LED PN junction and the surface of the heat sink, resulting in faster heat conduction and higher product reliability, making grow lights have higher light efficiency.