News/ Picture news

  • National Railway Administration of the People’s Republic of China announced that flexible protection net standard TB/T 3089-2004 was abolished.

  • OST 2019 Marketing Training Achieved A Great Success

  • Boulder was successfully intercepted in Baoji Chengdu line ,OST made new contributions!

  • OST curtain-type net -- new contributions were made in Mentougou

  • Accident again! Taiwan construction car was hit by falling rock, car crashed and people died!