Song Da No.10 Joint Stock Company is a member of Song Da Group.
It was formerly Underwater Construction Company which was established in 1981.
Throughout 21 years of development, the Company had been renamed for several times.
In 2002, the Company was privatized and renamed as Song DA No.10 Joint Stock Company.

- Construction of underground and underwater works.
- Construction of hydroelectric, irrigation, transportation, industrial, resident and public works.
- Mining and mineral processing.
- Construction consultancy (not including legal consultancy).
- House decoration.
- Trade construction materials.
- Trade construction equipments and machines.
- Automobile repairs.
- Import specialized transportation vehicles.
- The investor and contractor of small and medium hydroelectric plants.

The Company is the leading in the construction of underwater and underwater works, accounting for 70% of the market share. In comparison to other firms in the industry, the Company outweighs othesr in terms of the size, trademark, technology, experience, labor force…Despite of the fierce competition in the construction of underground and underwater works, with the tradition, experience and trademark of Song Da Group, the Company still maintains its status by winning bid in national-level important projects.