人妻无码AV中文系列

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      1. Concrete mixing and pumping machine

        The mixing pump is suitable for small and medium-sized large aggregate concrete transportation, including: rural civil construction; township and new rural construction; mine tunnel, highway and railway tunnel and other tunnel construction; water conservancy and Hydropower Engineering; geological disaster slope treatment; foundation irrigation and other construction characteristics such as large amount of concrete pouring or narrow space.

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        人妻无码AV中文系列

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