In 2004, the PPC Biofilter and PPC Industries provide air pollution control equipment for voc, odor, particulate and opacity project control. The biofilter, bioscrubber and bio trickling filter are manufactured for the abatement of odors, ethanol, formaldehyde, methanol, methyl ethyl ketone, amines, alkanes styrene, h2s, phenol, etc. Biofilters compete with the thermal oxidizer, rto, catalytic oxidizer, scrubber and activated carbon systems. The dry electrostatic precipitator and wet electrostatic precipitator are manufactured for particulate and opacity control of gas streams containing pm10, pm2.5 and condensable particulate emissions. The esp performance technology is designed to remove boiler fly ash, sulfuric acid mist, cement kiln exhaust, coke oven exhaust, glass oven exhaust, incinerator exhaust, etc.