Q: Can I place a sample order? A: Yes, and the sample fee could be returned when the order reach 1000 sets. Q: Can you customize the package or print our logo on the device according to our designs? A: Yes, We have a professional team could provide OEM/ODM services for you as your request. Q: Do you have private moulds of alcohol tester? A: Yes, our factory already pushed 10 private moulds, and still research and development of other new products. Q: How long will I have to wait before using?