(e) production and repair of air-conditioning equipment; production of gas-based equipment; construction and engineering services; construction and exchange of technology; transfer of technology; extension of technology; extension of technology; production and development of technology; production and distribution of materials; manufacture and distribution of materials; sale and distribution of equipment for the manufacture of new energy technologies; management of solid waste; sale of equipment for the protection of the environment; management of soil pollution and restoration services; sale of electrical equipment; management of water pollution; installation of new organic materials; management of air pollution; management of pollution of the environment; production and management of electrical equipment; installation of general machinery equipment; export and import of goods; export of technology; monitoring of the production and distribution of technology; manufacture and manufa...