- Providing hotel and restaurant services.

- Investing and building infrastructure, houses, offices, workshops, and yards.

- Technical design.

- Consulting to set up construction plans for industrial, housing, and public works.

- Real estate.

- Other under business license.

- Food products

- July 2006: Ocean Hospitality and Service Joint Stock Company, formerly known as Bao Long Construction - Trading Joint Stock Company, was established with the initial charter capital is VND10 billion;

- 2009: The company was restructured and became a subsidiary of Ocean Group Joint Stock Company (OGC), renamed as Ocean Hospitality and Service Joint Stock Company and raised the charter capital to VND530 billion;

- January 2010: Raised charter capital to VND750 billion;

- July 2010: Raised charter capital to VND1,000 billlion;

- August 2010: Became a public company;

- October 01, 2010: Officially traded on Hanoi Stock Exchange (HNX);

- August 2013: Increased charter capital to VND2.000 billion.

- June 03, 2020: Renamed as OCH Hospitality and Service Joint Stock Company.