FEATURES & BENEFITS CF-PCU Composite Filter cartridge is 4 in 1 style cartridge for RO water filter system, it contents PP cartridge, GAC/CTO/CTO+ activated carbon, and ultrafiltration membrane which with 0.01 micron rate. In addition to filtering sediment, rust, and other particulate matters, it can improve the taste and color of drinking water, remove chlorine and Tanning. Also, it could remove almost over 99.9% of colloids, bacteria, viruses, and smaller particles from tap water, retain the benefi…