Enclosed I would like to show you our Advantage: 1: you can get a gurantee from us,because we do this business since 2003, and have a high rerqutation on this business line. 2:You can get high quality and competitive price, We use the brand new material for our products, not the second hand, you can test it. 3: We are the profeshional manufacturer and have all the certifications: CE ROSH, CCC, IP67, ISO, E13, 4. you do not late in product warranty problem, our wantranty rate is lower 1/1000. 5. and you can have the regular warranty: LED bar light operating standards: The first step: lighting camera (lighting electrical connection, and then photographed complete strip lighting diagram) Step two: I Division in accordance damage, replacement circuit boards and repair parts, together with the next cargo ships; The third step: We will send clear and complete replacement chart to help customers to do after repair. We are the serious supplyer, if you order from us, we can offer you our best quality and best serive.that's why we are succesful in this file for many years. Hope to cooperate with you soon.