... choose. Procedure is very importent to customers, which can make you clear about how to install it and how to use it. 1) All ... years 1).If driver failed, we'll send you a new driver; 2).If LED failed, we'll send ... we will send you a new full set. All freight at our side;Professional after-sale team to work for you. ... month7).All managed by software2.Payment Term O/A,L/C,D/A,D/P,T/T,Western Union,Paypal ...