Chongqing Tongxun Power Industry Co., Ltd. was established on April 25, 1989. Legal representative Lu Changqing, the company's business scope includes: manufacturing and sales of high and low voltage complete sets of power equipment, transformers, special transformers, transformers, lightning protection grounding devices; R&D, production, and sales of optical fiber transformers and pre-installed integrated substations; electromechanical equipment Manufacturing; power technology research and development and technical consultation; lightning protection products and power equipment research and development, sales and consultation; computer software and hardware research and development, sales and technical consultation; power supply and power system operation and maintenance; foreign trade import and export business (the company The export business of self-produced products and related technologies; the import of raw and auxiliary materials, mechanical equipment, spare parts and related technologies required for the production and scientific research of the enterprise); the third-level general contracting of power engineering construction; contracting, contracting, and testing Power facilities level four; power generation, transmission, transformation, power distribution system equipment and parts, wires and cables, optical cables, wires, bus bars, steel, sand, cement, pipes, fire-proof seals, insulators, and hardware sales and technical consultation Services; design, research and development, manufacturing, sales, installation, operation and maintenance, standard and non-standard equipment and accessories for electrified railways and urban rail transit systems, special equipment and equipment accessories, power operation, sports systems, pole-mounted substations; railways, Urban rail transit communication signal system integration, etc. [1]