... 3.special design, 4.lots of types Specifications of conical twin-screw and barrel: 45/90, 45/97, 50/103, 55/110, 60/ ... for all kinds of appended fiberglass, plastic and PPA, PPO, PPS, LCP, magnetism powder and PC special engineering plasticComponents of alloy powder ... HRC>65°Two stage type of barrel (material of powder outlet is Cr12MoMV, vacuum quenching)and screw (powder output is treated by alloy ...