* Beijing-Tianjin intercity passenger line is certified to the highest standard of passenger line, and it allows the train speed of 350 kilometers per hour . The breakthrough in the ballast-less track technology not only greatly decrease dust and noise pollution, but are suitable for underground railway construction as well. This requires very high precision in production , and the flatness error should be controlled within 0. 3 millimeter.

* Since its establishment in 1990, the ZHENG ZHOU ZHONG BANG SUPER HARD TOOLS CO. LTD has been dedicated in producing premium quality diamond grinding wheel , which are an ideal choice in grinding crosstie for ballast-less track. After a series of rigorous tests, it indicates that the diamond grinding wheel totally accords withs the international standard.