? Established in 2010, Anhui Hanwei Electronics Co., LTD. is a manufacturer specialized in the research, development and production of high-precision instruments, embedded systems and automatic control systems. We are situated in Hefei National Hi-tech development zones. Hanwei prodcuts cover mechanical and ultrasonic heat meter, ultrasonic water meter, wireless self-organizing network water meter, main circuit board of meters, room thermostat, valve controller, intelligent ...