Shenzhen Toppo Lighting Company is one of the professional factory for producing and selling led lights. And Toppo have various sereis of led lights,such as led panel lights, led tri-proof lights,led tube, led batten, led wall pack,led troffer etc.Send Inquiry
1.If i have a questions I want to know , how can i contact you ?
You can find our platform or directly through major inquiry and send email to contact us.
2.How to explain “luminous Efficacy“ ?
A measure of how well a light source products visible light expressed as lumens /Watt.
The international (SI) unit of luminous flux or quantity of light and equals the amount of light that is spread over a square foot of surface by one candle power when all parts of the surface are exactly one foot from the light source.