WPC ( wood plastic composite )  material auto dosing system to decrease the labor cost ,Website:://.cnplasticmachinery.com, we developed the central material dosing system , this system can be used to dosing material to 4 sets of SJMS65/132 WPE profile machinery at same time . with exactly caculation about material dosing . with enviroment protection device , material can be supplied with exactly weight and volume to machinery change formula only change the setting of PLC controlling system .