| Established in 1990, Zhongshan Expert Electronics specialized in the R&D, manufacturing and marketing of digital doorbells and energy-saving lamps. As founder of digital doorbells, we enjoy the longest producing history and an experienced technologist team including our General Manager. We had more than 20 years focus at wireless technology. Besides, We have two factories focus separately on our two product lines.
The first doorbell factory approved by ISO 9001 in China
We are the first doorbell fac...