Since June 2018, during the construction of the metro tunnel in Moscow, LLC "CRCC Rus" has been conducting operational tests of the entire line of tunnel materials produced by LLC "smazka.ru".

The materials were tested and used for tunneling at TBM ZTE 6250.

As a result of positive conclusions received from engineers LLC "CRCC Rus", company-manufacturer China Railway Construction Heavy Industry Co.,LTD approved the use of mastics, lubricants and soil conditioners produced by LLC "smazka.ru" on new and post-warranty TBM's ZTE 6250.