How many patents does China high-speed rail have?

The ancestors of high-speed railway technology are Japan, Germany and France. Our technology is more complicated than Japan, Germany and France, and its level is higher than before. The Beijing-Tianjin, Wuhan-Guangzhou and Zhengxi high-speed railways operate at a speed of 350 kilometers per hour. So far, China Railway has not had any intellectual property disputes with any foreign companies. China's high-speed railway has independent intellectual property rights, and our technology must be patented, standardized and internationalized. So far, we have applied for 946 patents.