General items: technical services, technical development, technical consultation, technical exchange, technology transfer, technology promotion; fire technical services; fire equipment sales; construction project fire acceptance on-site evaluation technical services; security equipment sales; safety system monitoring services; safety technology prevention system design and construction services; household appliance sales; hardware product retail; electronic product sales; lighting sales; building materials sales; lighting equipment sales; hardware product research and development; hardware product wholesale; communication equipment sales; distribution switch control equipment research and development; distribution switch control equipment sales; domestic trade agents (except for items subject to approval according to law, carry out business activities independently in accordance with the law with the business license).