1. certification service: this refers to the professional qualification of the unit to use technical means such as detection, inspection and measurement to prove that products, services or management systems meet relevant technical specifications, mandatory requirements or standards.
2. Forensic service: the economic activities and related materials of the entrusting party are authenticated by a unit with professional qualifications, and opinions with probative force are published. This includes accounting certification, tax certification, legal certification, asset assessment, environmental assessment, real estate land assessment, architectural drawing review, medical accident identification and so on.
3. Consulting services: providing information, suggestions, planning, consulting and other services, involving consulting in the fields of finance, software, technology, finance, taxation, law, internal management, enterprise operation and process management.