Shenzhen Sigma Power Technology Co., LTD., established on August 10,2020, the business scope includes the general business projects are: software development; Basic software services (excluding medical software); Engineering and technology research and experimental development; Power electronic technology testing, technical services, technical development; Sales of power converters, amplifiers, communication products, electronic components, mechanical equipment; House rental; Property management; Import and export of goods and technology. , the permitted business projects are: Manufacturing of high-speed rail equipment, accessories, railway rolling stock accessories, aerospace and equipment, micro motors and components, power electronic components, transformers, rectifiers and inductors, power distribution switch control equipment, computer parts, industrial control computers and systems, communication equipment, radar and supporting systems, new energy equipment and accessories, integrated circuits, intelligent consumer equipment, sensitive elements Pieces and sensors.