Q:about priceA:Our product prices are influenced by various factors, including voltage, product configuration,quantity, transportation, and soon. Please contact me and leave your specific requirements, I will provide you with a more accurate quotation. Q: Can I put my logo on the boxes/cartons?A: Yes, we have a capability and professional efficient team, provide OEM and ODM . Q:Can l have a sample for testing? A:Yes, we can support free sample,but you have to pay to the freight. Q: How can youcontrolthe quality of products?A: We have special quality control personnel.