Northeast Electric Development Co., Ltd. (formerly Northeast Electric Transmission and Transformation Machinery Manufacturing Co., Ltd.) is a limited company established through targeted fundraising with the approval of Shen Tijiefa (1992) Document 81 of the Shenyang Enterprise System Reform Commission, with Northeast Electric Transmission and Transformation Equipment Group as the main sponsor. The company's main business is R&D, design, production and sales of products related to power transmission and transformation equipment, and hotel catering and accommodation business. The company's main products are mainly closed busbars, which are mainly used in the field of power systems. They are used to improve the transmission energy efficiency of transmission lines and support the transmission of high-power electric energy, and are important equipment for power systems.