42 Testing and evaluation of extrusion equipment, extrusion die needs, and extrusion processes; engineering and design consulting services about extrusion equipment, extrusion die needs, and extrusion processes; diagnostic services in the field of extrusion equipment, extrusion die needs, and extrusion processes; testing of materials applications, extrusion processes, and formulations for third parties; all of the foregoing services provided in the field of extrusion processes performed at temperatures equal to, above, or below the recrystallization temperature of the material being extruded;Custom design of machinery equipment to the specification of others for use in extruding plastic material, namely, screw type extruders, custom extruders, table top extruders, twin feed extruders, and bulk feed extruders; custom design of extruders to the specification of others, namely, screw type extruders, custom extruders, table top extruders, twin feed extruders, and bulk feed extruders; custom design of machines for processing plastics to the specification of others; custom design of machine parts for screw type extruders, custom extruders, table top extruders, twin feed extruders, and bulk feed extruders, to the specification of others, namely, packers, feed screws, liners, screws, jacketed barrels, and barrels; custom design of production line equipment to the specification of others for extruding plastic material, namely, dies, custom extrusion dies, flow control dies, forming dies, sheet and film dies, feeders, bulk feeders, twin shaft feeders, mixers, twin shaft mixers, cutters, rotary cutters, guillotine cutters, fly knife cutters, and controls for extruders; all of the foregoing custom design services provided in the field of extrusion processes performed at temperatures equal to, above, or below the recrystallization temperature of the material being extruded