TIANJIN, May 18 (Xinhua) -- China Railway Rolling Stock Corporation (CRRC) said on Friday that 84 percent of the 250 core standards used in the Fuxing trains, the country's fastest model, were produced domestically and research is underway on even faster trains.

The maximum speed of China's bullet trains rose to 350 kph, when the Fuxing, or Rejuvenation, trains started operation between Beijing and Shanghai on Sept. 21, 2017.

Wang Yongzhi, chief information engineer of the CRRC, said the Fuxing trains represent smart technology in railway systems. A Fuxing train has more than 2,500 sensors and can detect temperature, vibration, pressure, and insulation capabilities. It can also analyze driver behavior to improve safety.

The CRRC has a full set of products in high-speed and inter-city trains, and is actively seeking to expand into the global market, he said.

It is developing a 400-kph high-speed rail line between Moscow and Kazan in Russia, as well as a next generation magnetic-levitation train with a top speed of 600 kph.

The Fuxing bullet train design will be redeveloped to include green technology in new trains for the 2022 Winter Olympics. Testing of the Olympics trains, which will run on a new line linking Beijing and Zhangjiakou, will be finished by 2019.?