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Publishers Clearing House. Publishers Clearing House (PCH) is a direct marketing company that markets merchandise and magazine subscriptions with sweepstakes, and prize-based games. Publishers Clearing House was founded in 1953 by Harold Mertz to replace door-to-door magazine subscription sales by a single vendor offering multiple subscriptions by mail.
PCBs (polychlorinated biphenyls) are a type of organic chemical known as chlorinated hydrocarbons. PCBs are formed from a combination of one or more chlorine atoms and two benzene molecules. Two other names for PCBs are arochlors and chlorodiphenyls. In any PCB commercial mixture there may be 40 to 70 different compounds present.