。，，，，PVC，，，。。，，。 pvc suction hose pipe 4 inch .，4，PVC。，1 in<wire reinforced vacuum hosestrong>pvc fiber hosech pvc suction hosesuction hose suppliersong>pvc suction hose。，4PVC，PVC，，PVC。，。PVC，、、。。。。。4PVC、pvc wire reinforced vacuum hosetrong>pvc fiber hosesuction hose supplierssuction hoserong>1 inch pvc suction hose，，，，。，。，PVC，、。PVC。PVC，。PVC（），