The second advancing seat is further provided with {HEAD ~ two sensors}, whereas the slide block of the second advancing seat is provided with two sensing blocks capable of cooperating with {TAIL ~ the sensors} to execute the shredding operation is conjunction with the tool set and the computer control device 
The second advancing seat is further provided with { HEAD ~ two sensors } , whereas the slide block of the second advancing seat is provided with two sensing blocks capable of cooperating with { TAIL ~ the sensors } to execute the shredding operation is conjunction with the tool set and the computer control device
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH