Established in 1990, Zhongshan Expert Electronics specializes in the R&D, manufacture 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 Zhongshan Expert Electronics Co., Ltd is a the first doorbell factory approved by ISO 9001 in China. We continuously strive for innovation ability (one patent per week) to provide value-added products to the customers, and maintain our leading status in China even in Asia. Marketed under our brand name EXPERT, a pronoun of wireless digital door chime in mainland China and Hong Kong, our products are sold well in Southeast Asia, Europe and America. Our DIY system products are popular in most famous super markets in China. All OEM/ODM projects are welcome.Cutting-edge energy saving lamps from 0.5W to 500WWe maintain a technological edge over other energy saving manufacturers thanks to our experienced design staff and 14 years'history as an electronic manufacturer. We also benefit from our design partnership with Fudan University, one of China's most respected research institutions. That is why Homedept, B&Q and other top retailers turn to us. Each of our energy saving lamps, T5 tubes and ceiling fixtures in our 400-model catalog is truly cutting edge. Our latest releases include 500W energy-saving lamp - the most powerful unit on the market. We also offer 0.5W energy-saving lamp that barely register on the ammeter. Latest productsOur latest products including HID Car lighting system, notebook computer adapter, emergency energy saving lamps, remote control subsection switch, 86 remote control switch, remote control lamp base, etc.