Mashhad Metro is a light rail system operating in the holy city of Mashhad, in the Razavi Khorasan province of Iran.
The city of Mashhad is spread over 270km² and has a population of 5.2 million. Comprehensive studies for the construction of a new urban railway line were conducted during 1994-1999 and 2002-2004, highlighting the requirement for four new urban rail lines in Mashhad.
Packing grease for mechanized
tunnelling with TBM
Tail seal grease for mechanized tunneling with TBM
Liquid foaming agent based on biodegradable anionic surfactants combined with a