Shrinton Electron Technology Co., Ltd was established on 2008. Weare the professional notebook adapter, power supply, CCTV power,LED driver. We have the ISO 9001:2000. We have ourself R&Ddepartment. We can open the mosel as your mind freely for you.Defective units are less than 0.3%. Both of our products have 2years warranty. All of our products have the CE, ROHS, ERP, UL, CBsafety approval.