1.How to explain “luminous Efficacy“ ?
A measure of how well a light source products visible light expressed as lumens /Watt.
2.What’s Watt ?
The unit of electrical power as used by an electrical device during its operation. Many lamps come with rating in watts to indicate their power consumption.
3.Do you have the ability to do independent and development ?
Our engineer department have 15-20 people. We have the research and development capabilities. We also collect regularly each customer feedback. We have product improvement and new product development. We also hold monthly new product launches.