Q1. What's your sample time? If our regular products, normally 2 days. If your own customization, normally 3-5 days. Q2. How about production time for bulk order? Normally 7-15 days, as soon as possible. But the exact time will be based on your order quantity. Q3. Do you have certificates? Yes, most of our products have CE, ASTM, CPSIA, CPSC, EMS, RoHS, etc. Q4. You can do dropshipping? Yes, we have do dropshipping for many years and our warehouse can handle 2000-3000pcs packages each day. Notmally the packets will be shipped by EMS, and if you need, other shipping methods are also available.