1. Best service 2. Realiable supplier 3. Superior product 4. Function test, RoHS, UL Welcome to Hangzhou Singo Tech Co.,ltd.Hangzhou Singo Tech Co. Ltd, located in West Lake technology park in Hangzhou Zhejiang province, is only about an hour's drive from Shanghai International Financial Center. Founded in 2000, our company is a high-tech modern enterprise.We focus on PCBAdesign, manufacture and ...