... compounding, dispersing, homogenization, devolatiliation, pressure-buildup in twin screw extruders, in accordance to the specific requirements of each process ... of RUIYA's products.L Metering feeders are equipped with single screw, twin screws(both intermeshing and non-intermeshing), ... the standard volumetric metering feeders, the loss-in-weight feeder with accuracy as high as 0.5 % are also available ...