(1) Site transportation: including engineering materials from warehouse to construction point of loading and unloading, transportation and empty return. (2) Local projects: Including road excavation, tunnel, ditch construction and so on. (3) Laying of works: including laying, middle head production, lifting cover plate, buried pipe, school tide, traction head production. (4) Both ends of the project: including support, Suspension bridge and its foundation of the production and installation, terminal production, oil pressure and signal installation, the name of the electrical function testing. (5) Stopper works: including the production of oil-filled cable stopper, for fuel tank, automatic drainage and installation of signal devices. (6) Grounding project: including insulation joint, transposition box, protector, grounding box installation.