1.CE certificate 2.Hydraulic drive 3.USA Graco ... 5. Main construction features1.The main part of ST03 Sealant-spreading machine is base stock pump,curing agent pump, ... pump,up and down system of the base stock,sealant compound system,pneumatic system,hydraulic system and electric system ... tighting the scrw.Main technique parameter Mixing ratio 6:1—14:1 Base stock barrel: 55gallon(200L)Curing agent barrel; ...