R&D, production, sales, technology development, technical consulting, technical services, technology transfer and equipment leasing services for AC and DC power supplies and AC and DC load software and hardware; R&D, production, sales, general engineering contracting and services, technology development, technical consulting, technical services, technology transfer and equipment leasing services for new energy power generation, new energy vehicles, semiconductors, fuel cells, electronic component testing equipment and automated testing systems, technology development, technical consulting, technical services, technology transfer and equipment leasing services