In what mode does Rongjiu make money?

Rongjiuhe smart home consumer equipment sales; Software development; Domestic trade agent; Trade agent; Information consulting services (excluding licensed information consulting services); Conference and exhibition services; Market survey (excluding foreign-related surveys); Advertising production; Information technology consulting services; Marketing planning; Organize cultural and artistic exchange activities; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology popularization; Auto parts retail model to make money.