Shanghai Hanfeng Electronic Technology Co., Ltd. is a manufacturer of Internet of Things communication equipment, focusing on the design, development and provision of Internet of Things solutions in the field of embedded wireless communication. At present, it has a variety of embedded serial port transparent transmission modules and low-power transparent transmission modules and other products, which are widely used in smart home appliances, handheld mobile devices, medical and industrial testing instruments, smart grids, Internet of Things and other fields.