1. Are you a manufacutrer? Yes, We are printing and packing bags manufacturer and we have our own factory which is in Hebei, welcome to visit our factroy. 2. How could I check the quality? Often we will find some plastic bags in stock which are similar with yours and send them to you for free. If you need some plastic bags with your design, then we need 11 days to produce it. After you confiming the quality is perfect, we are looking forward to your orders. 3. How could I get design service? Actually we recommend you to find a design at your end. Then you can check the details with him more convenient. But if you don't have familiar designers, our designers are also available for you. 4. What's the leading time of the production? For samples in stock, the leading time is 1 days. For new samples, we need 11 days to produce it. For mass production, the production time is 13 days. 5. How could I deal with the quality issue? If quality issue happens, we will take responsibility to this situation. What you need to do is take some photos of damaged bags and describe the situation, it is very important for us to analysis the reason of accident, then keep patience and wait for our feedback.