吃奶呻吟打开双腿做受动态图,日本亲近相奷中文字幕,国产成人久久婷婷精品流白浆,乱人伦中文视频在线

G16 Pneumatic Pick Hammers
  • G16 Pneumatic Pick Hammers

A pneumatic tool used to break coal seam, concrete, road surface and roadway by means of impact. It can be used to cut off and break soft ore face in mining. Used in open pit mining for clay and soft rock; For the destruction of solid or frozen strata and for the digging of holes, perforations and ditches in civil engineering and subway construction.