PHLIZON OWN FACTORY- Phlizon has been engaged in the production and sales of led grow light for 8 years, and we provide high-quality products. COMPARE TO HPS/MH- Compared to MH / HPS lamps, this 600w light with SMD led chips generates less heat, more energy saving and lower electricity bills and more comprehensive light spectrum. The grow light compares to traditional 600W HPS/MH while consuming only 100W! More effective coverage area than any reflector series lights. Perfect fit for a 2x2ft growing area at 24" height. The difference of us is that we use double cooling fans. which can most extend the light life. DOUBLE SWITCH- Veg and Bloom button have different function. Veg switch: It's blue led and white led. For seedling or young vegetative growth,you can use Veg switch only. Bloom switch: It's red led and white led. For flowering/blooming,you can use both Veg and Bloom switches together. View Angle of LEDs: 90°and 120° FULL SPECTRUM- We did lots of experim