Great Wall Motor Co, China's largest SUV maker, plans to invest 2.6 billion yuan ($426 million) on the second phase of its SUV plant in Xushui of North China's Hebei province.

The project will cover 250,000 square meters and is scheduled to be completed within two years, Great Wall said.

Additional information on the project has yet to be disclosed.

The plant, located in Xushui of North China's Hebei province, will produce premium SUVs such as the Haval H8, according to Great Wall.

Aside from the Xushui plant, Great Wall has three plants -- two in Baoding of Hebei province and one in the North China port city of Tianjin.

The plants produce up to 800,000 vehicles a year, according to Great Wall.

In the first half of this year, Great Wall sold 370,301 vehicles, up 41 percent year-on-year.