May 2, 1994: Established Do Thanh Company Limited2004: Building a factory producing aluminum profile in Phu Thi industrial zone – Gia Lam – HN

2008: Transforming a limited company into Do Thanh Aluminum Joint Stock Company.

2009: Installation of the 3rd extrusion line (800A machine) and electrostatic painting line with capacity of 4,000 tons/year

2011: Expanding production, installing the 4th extrusion line (1400T Machine)

2012: Installed the 5th extrusion line (Machine 800 B) to increase the total output of the factory to 8000 tons/year.

2013: Installed the 6th extrusion line (Machine 800C) to increase the total factory output to nearly 10,000 tons/year

2014: Investing in building warehouse of finished products with an area of ​​3,200 m2. Installing 1 more painting line with a capacity of 5000 tons/year. Replace 880 extrusion line with 1100A line

2015: Grando brand launches

2016: Installation of the 7th extrusion line (1100B machine) bringing the total factory output to 15,000 tons/year.

2017: Expanding investment of 7000 m2 of factory for structural warehouse.

2018: Installing 2 extrusion lines (800D and 1100C machines) and 1 electrostatic painting line, bringing the total output of the factory to 20,000 tons/year

2019 – 2020: Installation of extrusion line with a capacity of 2,500 tons/month for industrial production and construction of a plant with an area of ​​5000 Ha in Hung Yen

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