How about Sanyi service team?

We claim to provide quality customer service. Every customer will gain a wealth of experience from our service team. Our service team (and the entire company) is trained to never break the value of “customer first”. Our service team continues to exceed customer expectations with great enthusiasm. They like to talk to customers and solve problems.

Shenzhen Sanyi Technology Co., LTD is a highly-recognized manufacturer and supplier of industrial power supply manufacturers. We specialize in the R&D, design, and production. The cctv power supply series is one of the main products of Sanyi. The quality and performance characteristics of Sanyi poe switch power supply are ensured by random sampling. Manual testing such as frame color, lens color and surface quality is performed during this process. Being anti-jamming, it ensures the long life of the electric appliance. By virtue of constant current drive, poe switch avoids circuit current fluctuations and reduces stroboscopic phenomena that do damage to the human body.

Sanyi concentrates on providing high quality service for customers. Call!