- Designing, manufacturing, assembling forced pipes, water pressure mechanical devices, water power and other main devices for the hydroelectric plants.

- Manufacturing and assembling tubs, steel structures of the oil filter plants.

- Processing, manufacturing and assembling devices and steel structure for the sugar manufacturing plants, cement factories, and other factories in the industrial zone.

- Processing and making industrial related equipments.

- Others under business license.

- May 14, 1992: The company's forerunner - Erection Enterprise 45-3 was established by separating from Erection Associated Enterprise, directly under Vietnam Erection Enterprise, now Vietnam Machinery Erection Corporation.

- Jan 02, 1996: The company was renamed as Erection and Construction Company 45-3.

- May 15, 2006: The company was renamed as Lilama 45.3 Joint Stock Company with the chartered capital of VND6.8 billion.

- Jun 2007: The company increased chartered capital to VND35 billion.

- Jun 11, 2008: Listed on Hanoi Stock Exchange (HNX)