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Concrete lining trolley tunnel secondary lining must be used in the construction of special equipment used for concrete lining construction of tunnel walls. Concrete lining Jumbo during construction of tunnel secondary lining is essential for non-standard products, mainly simple lining, full automatic hydraulic walking lining and mesh lining trolleys. Hydraulic lining trolley can be divided into the arch, full round needle-beam type, the bottom needle-beam, full-circle through