According to the new engineering standards. Is to change to a larger displacement. Disc replacement rails, concrete sleepers of wood as a pillow. Restructuring and enhancing the stability of the embankment.
According to the new standard is to change lanes, larger. Change the pillow pillow pillow from a wooden cross supports prestressed concrete. Improve the structure and enhance the stability of the country and etc.
to be in accordance with the new standard engineering is to change the track, there is a large change, pillows pillows from rails wood is a pillow prestressed concrete structure and improve the security of the country.