1.Strong rectangular frame fixed by screws, an inset hole every 25cm to fix the slotting auger, guard board,bunches of cables and circuit diagram sidekicks, etc.
2.the resistance of stems is 24 500 N/m+2,the resistance of nodes is 9 800 N/m+2,add the force of roots which fix soil,the whole resistance which resist landslide will be 39 200 N/m+2,the reproduction capacity is very strong and its growth is very fast.
