HEPA Filter, Air Filter, FFU manufacturer / supplier in China, offering Industrial Filtration Clean Room Ceiling HEPA ULPA Filter DC Ec Fan Filter Unit FFU, En 779 G4 Merv 8 Activated Carbon Chemical Air Filter, High Air Flow U15 U16 Mini Pleat Panel Type ULPA Filter 99.9995%, 99.99995% Efficiency at 0.12 Micron μ M and so on.