Shenzhen Changwei Technology Co.,Ltd.,a high-tech enterprise specialized in industrial automatic control field of serial port communication and information networking product development and sales, to provide customers with cost-effective and high stability of serial communication, serial port equipment solutions, network solutions and solutions for industrial ethernet. Owns the independent brand CHWIO series industrial Chang high-end switch quantity, analog signal acquisition and control equipment, operation of the main products include distributed IO (switch signal, analog input and output module), serial device network server, embedded serial communication module, serial port converter, industry design, stable and reliable performance, has been widely applied in building control, production line automation control, field monitoring, energy monitoring, intelligent traffic, intelligent Home Furnishing, computer room power and environment monitoring and other industries.