Dispatching labor force to foreign countries; editing Railway Standard Design and Railway Investigation and Surveying; engineering investigation and design; engineering consultation; project supervision; engineering inspection; general contracting; specialized contracting; labor subcontracting; photogrammetric survey and remote sensing; engineering survey; development and application of geographic information system; cadastral survey; development and sales of railway specialized equipment and instrument, fittings, elements of railway bridges and railway engineering machinery; import &export of goods and technology; design and production of printed advertisement; issuing advertisement on Railway Standard Design and Railway Investigation and Surveying.