Photoelectrochemical oxidation (PECO): This variant of PCO emerged in 2017 from your manufacturer Molekule. The Molekule Air purifier didn't score perfectly within our checks for dust, smoke, and pollen removing. https://hannadljd040783.answerblogs.com/28964824/the-fact-about-lg-puricare-air-purifier-that-no-one-is-suggesting