Technical Research and development, technical consultation on new energy (except dangerous goods) , research and development and technical consultation on wind power equipment and photovoltaics power equipment, sales and maintenance of environmental protection equipment, instrumentation, high and low voltage equipment, communications equipment (except ground reception facilities) , mechanical equipment (except low speed electric vehicles) , electrical equipment, computer hardware and software, and peripheral auxiliary equipment, sales of metal materials (except rare and precious metals) , hardware products, electronic products, chemical products (except dangerous chemicals) , software development and technical consultation, Landscape Engineering, municipal engineering design and construction, import and export of goods or technologies (except those prohibited by the state and involving administrative approval) ; development and construction of wind power projects, solar power projects, photovoltaic power projects, and biomass power projects, operation; steel structure engineering design, construction; meteorological detection equipment, monitoring equipment design, sales, installation; tower and related supporting facilities installation, maintenance, maintenance. R & D, production (branch only) , sales and maintenance of special Environmental monitoring instruments and meters, terminal measuring equipment. Projects subject to approval in accordance with the law shall be approved by the relevant departments before starting business activities