History

May 2, 1994: Do Thanh Company Limited was established. In 2004, a factory was built to produce aluminum profiles in Phu Thi industrial zone - Gia Lam - Hanoi."
2008: Transformed a limited company into Do Thanh Aluminum Joint Stock Company.

2009: The third extrusion line (800A machine) and the electrostatic painting line with a capacity of 4,000 tons per year were installed.

2011: Production was expanded by installing the 4th extrusion line (1400T machine).

2012: The 5th extrusion line (Machine 800 B) was installed to increase factory output to 8,000 tons annually.

2013: The 6th extrusion line (Machine 800C) was installed to increase factory output to nearly 10,000 tons annually.

2014: A warehouse of finished products with an area of 3,200 m² was built. An additional painting line with a capacity of 5,000 tons per year was installed. The 880 extrusion line was replaced with the 1100A line.

2015: The Grando brand was launched.

2016: The 7th extrusion line (1100B machine) was installed, bringing the total factory output to 15,000 tons annually.

2017: The factory expanded with an investment of 7,000 m² for a structural warehouse.

2018: Two extrusion lines (800D and 1100C machines) and one electrostatic painting line were installed, bringing the total factory output to 20,000 tons annually.

2019 - 2020: An extrusion line with a capacity of 2,500 tons per month for industrial production was installed, along with the construction of a plant covering an area of 5,000 hectares in Hung Yen.