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The Beijing-Guangzhou High-Speed Railway officially opened on December 26, marking a major milestone in China's transportation infrastructure. As the world's longest high-speed rail line, it connects nearly 30 cities and dramatically reduces travel time between northern and southern China. Now, the journey from Beijing to Guangzhou takes just 7 hours and 59 minutes, making it easier than ever for people and goods to move across the country.
Since the start of construction on the Wuhan-Guangzhou section in June 2005, China has completed this massive project in just seven and a half years, creating a new "artery" that links the north and south efficiently. Unlike traditional railways, high-speed lines use ballastless tracks, which require advanced waterproofing solutions. The waterproof layer must not only prevent seepage and cracking but also endure the intense pressure from high-speed trains, heavy loads, and constant vibrations.
To meet these demands, Yantai Wanhua's polyurethane products are being widely used in the railway's construction. One of the key materials is polyurea, a coating known for its exceptional wear resistance, impact strength, crack resistance, UV protection, and performance in extreme temperatures. It can be applied in one go to reach the required thickness, and it adapts well to various surfaces—whether flat, sloped, or vertical. This makes it ideal for ballastless track systems.
According to reports, many companies that use Wanhua's polyurethane products have successfully secured contracts for the high-speed rail project. The polyurea coatings developed by Wanhua offer superior tear strength and elongation, outperforming industry standards. Beyond waterproofing, polyurethane is also essential for anti-corrosion coatings on EMUs (electric multiple units), railway tracks, and station facilities.
With its strong presence in the polyurethane industry, Wanhua has played a crucial role in supporting China's high-speed rail expansion, contributing to the success of one of the most ambitious infrastructure projects in modern history.