... equipment 1) Having good fogging effect 2) Professional spraying gun 3) Easy-operated 4) Easy-moving DF-II Type Polyurethane ... proportioning pump:Proportioning pump is made of stainless steel, aiming to lower the abrasion of sealing elements to the maximum ... x 1100mmStandard: one main engine, two feed pumps, one spray gun, 15-meter insulation pipeApplications: polyurethane wall, roof, cold storage, ...