Da Niu Engineer is a professional information-sharing platform serving engineers and technical professionals in engineering consultancy and technical services. It brings together reference materials intended to support research, planning, design, and consulting work, including statistical bulletins and yearbooks, government work reports, water and soil-conservation publications, regional population information, local profiles, and hydrological data. The platform also provides national, industry, local, and enterprise standards, alongside laws, regulations, ministry rules, policy guidance, and planning documents.

Its service categories cover investment and feasibility-study consulting, energy-efficiency reports, social-stability risk assessments, and water-sector consulting. Water-related offerings include soil and water conservation plans, flood-impact assessments, water-resource assessments, water-use and conservation evaluations, and drinking-water source protection reports. Other consulting resources address environmental impact assessments, pollutant discharge permits, land reclamation, geological-hazard assessments, forest-land use, and mineral-resource evaluations. The site also lists planning and design, traffic-impact assessments, preliminary design, project cost services, occupational health evaluations, and road quality and safety assessments. Users can browse case materials, templates, and training resources, with some materials offered for download.