Activity: Running rails and curves for suspended monorails, material transport system, compressed-air cradle drilling machines.
企业行为：悬挂轨道的直轨和弯轨，物料运输系统，气动钻机。
Activity: Running rails and curves for suspended monorails, material transport system, compressed-air cradle drilling machines.
企业行为：悬挂轨道的直轨和弯轨，物料运输系统，气动钻机。
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