1. Canyou provide free sample? Yes,we can offer you 5~10pcs free sample,but you need pay the express Charge by youself. 2. How will you control product quality? We strictly control ever detail of production,and every product is inspected by our QC team before delivery. 3. Can customize,modify and develop products according to the design drawing? Yes ,we provide OEM service and can customize products according to the drawing.. 4. How do I know that you have sent he products out? Once the products are sent out,a tracking number will be provided so that you can check where your goods at all times. 5. What about delivery time? Sample,We will send to you within 5 days after payment received,Production for big quantity needs 10 to 15days ,And it also depends on product and quantity.If want to know the exact time.Email us the quantity. 6. What are the payment terms? Payment terms:T/T in advance.30% deposit in advance and 70% balance before delivery.. 7. How you will send the goods to us? We will send the goods to you by DHL,FEDEX,UPS, EMS,AIR etc..