Callsun Electronic Technology Co., Ltd Located in Dongguan City, a famous manufacturing city in Guangdong Province.It is a hi-tech enterprise focusing on R&D, production and marketing of electronic products. We have built several departments, such as Marketing Dept., Technology Dept., Production Dept. and After-Sales Service Dept. Our company has employed about 20 engineers with different skills.

Our infrared wireless amplifying system for teaching which is developed and produced by us has gained recognition from the education sector and market immediately after it came to the market. This products has been awarded as the National Practical New Technology Invention. Our infrared series of products for teaching has been sold to the universtity,middle school and primary school throughout the nation and had contributed to the technicalization of the world education.