Established in 2003.SHENZHEN KEYUANTAI CO., Ltd is one factory which specialized in researching , manufacturing and sales all kinds of adapter and charger .manufacture plant covers an area of 3000 square meters .we have more than 200 skilled employees. All of our products can be design to 5w-600W ,two hundred series of products for clients choose . our products including AC/DC adapter ,DC/DC adapter .PFC power supply . Switching power supply . Charger Security equipments and LED power supply .and large power of iron shell power supply ,also OEM is welcome .we can finish the products in one week from we got the order