News/ Picture news

  • Romantic Six-day Tour in Nha Trang for OST and The Families

  • The Largest Flexible Steel Structure Shed Tunnel Project in China Was Completed Successfully

  • Striving Hard to Accomplish the Best Slope Protection Project in China – the Eternal Destiny of OST People

  • Care Education - OST Made Donations to School

  • Great Success on Impact Test of New 3500KJ Passive Protection System