IL-1 is easy for installation. Be filled with Antiscalent Ball which use harmless polymerization Phosphas Phosphate as material. It can stop the scale and reduce hardness of water. Especially, it can form a protection film at the iner surface of the metal tubes to arrest corrosion. YUNDA FILTER CO. Is an enterprise specialized in all kinds of water and air purification elements such as True Coconut Shell Activated Carbon Cartridge, PP Sediment Cartridge, Hollow Fiber Membrane, Activated Carbon Fiber, Stainless Steel Filter Housing, Plastic Filter Housing, Air Filter Bag and spare parts. Our products are widely being exported to America, South East Asia, Middle East Japan, and Korea and deeply popular to our clients both at home and abroad. We have advanced equipments and technicians, reasonable price, quick delivery and good after service. Should you are interested in our products, welcome to contact me without any delay. Looking forward to hearing from you soon.