The technique was imported from Japanese electric controller in QUARIET, EP-181 FOUR FACES WOOD SHAPER. Because of using VVVF, steeples variable adjusting, it is very precise. SL9200 Electric Control System for fast abutting line is used for artificial chump. It uses KOYO PLC and MITSUBISHI VVVF. That can sure the quality of abutted surface. The product was confirmed by BG5226-85,IEC439-1 standard.