... control system 2.high quality,competitive price Butyl Coating Machine Coating Extruder Machine 1. Contact InformationAlice Meng+86-13953166178bohman_alice-----yahoo----- ... Extruding deviceIt is composed of hydro-cylinder,extrude piston,sealant cylinder,glue head block,dispensing head etc. ... magnet valve, reducing valve,pressure controlled valve,cylinder,joint and pipe line.6. Electric control systemIt ...