1.All products we sell are 100% New Original Factory packing in good condition and have been tested before they are shipped. We will try our best to avoid any quality problems. 2.We will offer the technical support by experienced staff, which have undergone rigorous testing and certification 3.We offer 12 month warranty after receiving parcels. If there are some workmanship or material defects with the products, please contact us firstly, we will exchange it or offer other solutions for you to make a choice.