1.How long is the delivery time ?
Samples within 3 working days, bulk order is within 15-20 working days. If you are very
urgent, we will try our best to help you.
2.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.
3.What’s efficacy about the light ?
The light output of a light source divided by the total electrical power input to that source, expressed in lumens per watt(lm/w).