Shenzhen Guandexin Technology Co., Ltd is a professional manufactory specialized in research & development, manufacturing & marketing of switching power adapters. We obedience to the value of "sharing, result and responsibility", persist in the operation principle of "gain reputation by high quality, show virtue by win-win cooperation and earn trust by keeping promise", and now we are fighting for the vision of "providing safe, energy-saving, environmental, efficient power supply" ...