My company has product patent right for this model.

Instruction

   RB777C Tamping Rammer is Used to compact the gravel backfilled in the highway construction, the basic soil on roads of the municipal planning ,airports,ports,railway stations, and the base backfilled surrounding the sewers and the underground electrical pipelines,gas pipelines 
 My company has product patent right for this model.

Instruction

B77C Jack hammer is a ideal tool that break up concrete and other solid object in the road construction and installation.It has characteristic of simple structure,high efficiency and handy use . As long as fix a drill shank, turn on air source, then working.
B47

Instruction

    To pave and break concrate foundation installing engenering to break other hard things
    The Paving breaker model B47 is tools with compressed air as its power.The compressed air is distributed alternatively through the distributing valve into either end of the cylinder assembly so that the hammer inside is made to carry on a reciprocaql motion which impacts the shank of the steel chisel by the tappet drives the chisel into the concrate foundation and makes them split into huge pieces