1,Q: What is your MOQ of switch power?A: Our MOQ is 1 piece 2,Q:How many year warranty of your Led driver?A: Two years 3,Q: Do you offer sample of power?A: Yes, We offer free sample, but you need pay the shippment. 4,Q: Do you have switch power factory?A: Yes, we are OEM & ODM manufacturer in Donguan. 5,Q: Is your power with copper transform or something?A: We can do with complete copper transform and copper cladding aluminum. 6,Q: Do you have any certification?A: Yes, we have CE, RoHS, FCC and ISO9001 right now. If you need other certification with large order, We can apply for it.