... .High Quliaty Base Material 4.plastic extruder barrel and screw Specifications of conical twin-screw and barrel: 45/90, 45/97, 50/103 ... all kinds of appended fiberglass, plastic and PPA, PPO, PPS, LCP, magnetism powder and PC special engineering plasticComponents of alloy ... barrel (material of powder outlet is Cr12MoMV, vacuum quenching)and screw (powder output is treated by alloy), the using lifespan ...