Shiyan xinjiabin Materials Trade Co. Ltd.: from now until May 20, 2015, 4051033, 4050076 manufacturers to carry out product promotion activities for the two models during the promotion period three package service upgrade changes, in the original 6 months three packets on the basis of giving 3 months three period. That is over 9 month period of Three Guarantees, while the use of mobile phone inquiries security customers 100% donated 50 yuan mobile phone calls. See product new packaging. Tel: