RK-8875 is a defoamer developed from polysiloxane-polyether copolymer and active synergist with special structure. The new upgrade makes this product have excellent defoaming and antifoaming performance and stability. The special structure ensures that the system compatibility remains unchanged while the performance is greatly improved. It has good defoaming and antifoaming ability for water-based flexographic inks, water-based acrylic overprints, pure acrylic emulsions, PVA, and polyurethane emulsions, and is particularly suitable for addition during the grinding process and paint mixing process.