A15 level Bearing about 1.5 tons and is used in areas where motor vehicles or non-motor vehicles are completely prohibited

B125 level Bearing about 12 tons, used for sidewalks, pedestrian areas, non-motorized lanes, small car parking lots and other areas

C250 level Bearing about 25 tons and is used in residential areas, inner streets and other  areas where only a small number of light motor vehicles or cars drive

D400 level Bearing about 40 tons, it is used for urban motor vehicle roads, roads, high-grade highways, expressways and large vehicle parking lots for various types of vehicles

E600 level Bearing about 60 tons, used for freight station, logistics area, wharf, airport and other areas

Light weight, single unarmed can be open, convenient down hole maintenance!