Q1. Does the sample is free?
The sample is not free, but if you place the order more than 100pcs, we will refund the sample charge to you.
Q2. How about the delivery time?
2-3 days for sample, 2-30 days for bulk order
Q3. Do you offer customized service?
Yes, we offer, but the customized service will be base on our product. it means logo, label are acceptable.
Q4. What is the warranty of solar controller
1 years
Q5.How to deal with after-sales problems?
we have 24 hours online service.