2. Specific work includes: geodesy, surveying and mapping aerial photography, photogrammetry and remote sensing, and geographic information system engineering; Engineering survey, real estate surveying and mapping, real estate surveying and mapping, marine surveying and mapping; Map compilation, navigation electronic map making and Internet map service; Surveying and mapping technology, surveying and mapping instruments, satellite positioning system, surveying and mapping software system, geographic information system; Technical development, technical consultation, technical service and achievement transfer of marine survey system; Surveying and mapping engineering, engineering survey, engineering survey, surveying and mapping technical consulting services, control survey, real estate surveying and mapping, cadastral surveying and mapping; Geographic information collection, fine adjustment and measurement, consultation, design and production of railway long track construction; Professional contracting of building decoration engineering, building waterproof engineering, anti-corrosion and moisturizing engineering and demolition engineering; Professional contracting of foundation and foundation engineering, prevention and control of building quality diseases; Building structure reinforcement, transformation, repair, repair, correction and construction; Research, development and consulting services of construction engineering technology. bale