- Mining and processing limestone.

- Mining and processing clay, bauxite, sand and other minerals.

- Constructing civil, industrial, transportation works.

- Repairing electrical engineering equipment and machineries.

- 1858: Hai Duong Mineral Eineal Processing Joint Stock Company, formerly known as Hai Hung United Limestone Quarry, was established;

- 1997: Renamed as Hai Duong Stone & Mineral Mining and Processing Company;

- 04 July 2003: Hai Duong Provincial People's Committee issued the Decision No.2740/QD-UB on equitizing and transforming Hai Duong Stone & Mineral Mining and Processing Company into Hai Duong Mineral Eineal Processing Joint Stock Company;

- 18 July 2003: Put into operation under the model of a joint stock company with a charter capital of VND5,724,700,000;

- 08 January 2010: Charter capital was raised up to VND11,449,400,000;

- 03 September 2013: Became a public company under the Document No.5547/UBCK-QLPH issued by the State Securities Commission of Vietnam;

- 26 August 2015: Charter capital was raised up to VND17,174,100,000;

- 22 December 2016: Traded on UPCOM market;

- December 11, 2019: Increased charter capital to VND32.628.180.000.