Offering Power Supplies with Quality Marks Worldwide. Guanyuda Power Supply is a reliable supplier of switching power supplies, power adapters and LED power supplies, with 20 years of experience. Our products, which come with GS, CCC, CE, UL, RoHS, TuV, CB, BIS, SAA, PSE and marks, are well received by our 1,000 buyers in the US, Australia, Germany, South Korea, Japan, the UK and Canada. We have 60 QC technicians with over 10 years of experience each. They strictly inspect each item by utilizing a full suite of testing machinery, such as ATE, EMC labs, pressure testers, earth resistance testers and electric load machines. As a result, we have maintained a repair rate of less than 0.02 percent. We offer three-year warranties. We have 25 R&D engineers with average 10 years of experience. For a customized design, they can complete a sample as fast as in 15 days. Plus, they add 10 new designs to our catalog each month for your diverse needs. As a result, big companies such as Midea, Haier, Hisense and A.O. Smith trust their OEM projects with us. Moreover, we accept orders starting at 100 PCS and our delivery time is 10 days. Our 25,000sqm ISO 9001:2015- and ISO 14001:2004-certified factory is equipped with advanced wave soldering machines, ultrasonic welding machines and 18 production lines. With these resources, our 1200 skilled workers can achieve a monthly capacity of 2500,000 units. Accordingly, we can handle your volume orders with ease. To learn more, call us today.