led ring lamp overall is a circular structure, round lamp ends respectively have a light-emitting filament, the inner wall of the lamp is coated with phosphor.
After the power is turned on, a trace of argon ，and thin mercury vapor inside the lamp will produce a conductive effect to emit ultraviolet light,
Led lights have many advantages, in energy-saving lighting, environmental protection and durable features are very prominent,
this led ring light tube is also used in some office buildings, shopping malls, factories, or home lighting.
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