The Chinese Ministry of Railways and XJ Group Corporation have decided to accelerate railway construction in Urumqi, the country's westernmost province.
The project involves spending CNY310bn ($45bn) to increase XJ's railway mileage to 12,000km before 2020.
The contract will also see further upgrades to XJ's railway mileage and transport capacity, according to aboutxinjiang.com.
XJ undertakes 95% of the region's passenger and cargo transport task.