Bit for ground boring[To register A new design for practical use : No. 03598905 ]
This bit is the bit for boring of ground, which has the touching power of first plowing through being touched by 6 sides of the first plowing tip and 6 homes of a vertical hem, in case of that the first plowing tip to be a shape of octagon is welded into the home of a vertical hem and it is possible to mass-manufacture through correcting of accurate mold.

Grouting equipments [Patent pending No. 0038731]
This is the equipment to be very special for the vertical hem of being state - of - the-art that has the clack valve in order to protect it from blocking of the injection nozzle through injection fuel's flowing backward caused by the working pressure is little bit stopped and it is possible to inject in progression without blocking through establishing the hybrid-guide up and down for the purpose of mixing it after supplying the A and B liquid through the double-pipe rod.