Screw and Barrel for Haitian Mars Series Injection Molding Machines Screw and Barrel for Haitian Mars Series Injection Molding Machines Haitian Mars Series includes : MA600 MA900 MA1200 MA1600 MA2000 MA2500 MA2800 MA3200 MA3800 MA4700 MA5300 MA6000 MA7000 MA8000 MA9000 MA10000 MA12000 MA13000 MA14000 MA16000 MA18500 MA21000 MA24000