CE certificate made up of stainless steel and corrosion-resistant materials use in freshwater,seawater, wastewater treatment SJ-T-1.1CE ... bottom.7,Azotize underwater sediments,prompted the residual high-protein materials to the surface,so that cleaned up timely8,Purifying water ... to instal, operation zero fault, convenient to repair, low cost Carton Packaging(cm3):110*53*15 ,43*19*17 injector aerator