Shenzhen Shi Yingyuan Electronics Co., Ltd as the head office was founded in September 2006. We focus on the R&D and manufacture of switch power supply and battery charger with more than 900 employees, certified by Quality system certification such as ISO9001,14001 etc. The Dust-free workshop covers an area of 30000m2, the production capacity monthly can reach 300Milions sets , annual turnover over 500 million RMB. Our main products:AC/DC power adapter 3W-300W /PD Charger 20W-100W/Battery charger:90W-3600W,all of products have worldwide safety approval, such as UL/CUL, FCC, CE, CB, SAA, RCM, UKCA, KC, PSE, BIS, BSMI etc.