1) Maximum blue light for strong vegetable growth 2) Balanced orange-red light for stern elongation and flowering imitates daylight3) Provides optimum spectral energy required for vegetative growth 4) High red and blue spectral ratios for good photosynthesis efficiency 5) Good lumen output for high par values 6) Plants get robust through high blue light output 7) High red light ratio for healthy plant growth 8) Long average life, high lumen output, low energy consumptionborder=0> producing area:China