import and export of goods,:sales of chemical products(do not include licensed chemical products); sales of special chemical products(do not include dangerous chemical products); technology service, technology development; technology consult; technology exchange; technology transfernation; technology promotion; information technical consultation; enterprise management consult; marketing planing; conference and exhibition services; software development; internet of things technology services; electric products sales; engage investment with funds; import and export of technology services; agent of import and export; except for project approval by law, independently carry out business according to law with business license.