Toppo 18w/32w/40w/55w/65w LED Single Batten

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1.what’s the meaning of “Beam Angle”? The spread of light from a luminaire. For example: a fitting such as a low bay ,which is closer to the floor,will have a wider beam angle to illuminate a given floor area while a high bay fitting will have a narrower beam. 2.What’s colour temperature ? The...
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