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led ufo grow lights

  1. Different wavelengths of light and their effects

    Idle Chit Chat
    First of all,LED Ufo Grow Lights 150 Watt Ip65,what are the "components" of what we call light?What among them have harmful effect to human body, what good make use of will be helpful to kill bacterium, eliminate bacterium to wait for a job?Light can be classified according to its wavelength...