Tel ：+86-0138 7272 8636 Mail：firstname.lastname@example.org
Add ：39 Jichang Road, Old Urban District, Luoyang city,
Henan Province, China
Internal and external trolleys
The internal and external trolleys are used for the lining of open cut tunnels, and have independent walking systems, hydraulic systems and support systems, which has the advantages of convenient, fast, accurate, fast lining, good surface quality and so on.