Hom 23/11/14 toi co mua mot chiec nha kim cuong 4,2ly nhung k co giay kiem dinh chi co hoa don,vi theo loj nhan vien noi kim cuong fsi tren 4,5ly moi co giay kiem dinh.Xin cho toi hoi tai va nhu vay co thiet thoi j cho toi sau nay k Xin cam on