Many smart grid communication terminals independently developed by Aowen technology strictly comply with the regulations of the Academy of Electric Power Sciences, the national industrial equipment reliability standards, and the installation and construction requirements of the power grid company. The products have been widely installed in the power transmission network in most provinces of China, and can be compatible with supporting multi grid APN security protection, supporting multi center master station access, realizing remote recruitment, recording and broadcasting file return, supporting multi center master station polling and concurrent data, and supporting a variety of network transmission protocol formats. A set of solutions based on Internet of things technology is constructed for the power distribution network market, which realizes the intellectualization of power distribution network and effectively solves the problem of efficient, stable and fast transmission of power data business. Aowen technology has independently researched and developed a series of products with independent intellectual property rights, including embedded software, hardware, client configuration tools, on-site configuration of handheld terminals, analog master station test system, etc., which have won praise from customers.