China is a world leader in building railways not only for other countries but also for their own use. Currently, China has the largest network of high-speed rail tracks. In fact, the length of their tracks is more than all the world’s combined.
Below is video, courtesy of Wendover Productions, which gives you a preview of what makes China so good at building railways.
Basically, China is a global leader in railway technology and the most surprising thing is that they have built most of their tracks in the last 15 years. However, they have been building railways for several countries over the last few years. Some of these, such as standard gauge railway (SGR) in Kenya are still ongoing. Some phases such as the SGR line from Mombasa to Nairobi is already complete and has been in operation for some years.