Do trading companies and information consulting services belong to the same industry?

Don't belong. Trading companies belong to the wholesale, retail and sales industries. The main purpose of trading companies is to buy and sell goods. For trading companies, the most important thing is information and commercial channels. There should be sources of goods and sales targets to generate certain profits. Information technology consulting service belongs to modern service industry. The business of information technology service enterprises mainly includes the following eight categories: information technology consulting, information technology operation and maintenance, design and development services, testing services, data processing services, integrated implementation services, training services and information system value-added services.