1. Which services does OEM include? A. Logo printing B. Customized package C. Software customization: Booting image, UI, App, Function, etc.2. Which payments do you accept? We accept T/T, Western Union, Credit Card, etc according to the exact order amount.3. How about the delivery time? For samples: within 1-3 working days for standard products in stock. For bulk order: about 15-20working days after we receive the 30% deposit and customers confirm all the OEM details. 4. Can my parcel be tracked and when can I get the tracking number of my parcel? We will send you the tracking number on the second day after the parcel is shipped. You can track the parcel at the official website of the delivery company. 5. What kind of power adapter can you provide? EU, UK, US, AU four standards of plugs are available. We will send the different adapter to you according to your country or requirements. 6.How about the warranty? 1-year warranty: If there is any problem, you could contact us. Our engineers will patiently tell you how to solve it. If there's still a problem with the help of our engineers, you can return us the defective products for maintenance. And then we will send back good items to you ASAP.Customers need to be responsible for the shipping costs. In order to avoid loss, all our goods are tested carefully by technical staffs before delivery, please rest assured！Attention: If you want to get a cheaper, faster and safer shipping method, you can click contact suppliers and we will get back to you immediately during working hours. In order to avoid loss, all our goods are tested carefully by technical staffs before delivery, please rest assured!