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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.
Tetrachlorethylene, also known as tetrachloroethylene, perchloroethylene, PCE, or perc, is a commonly used solvent (a substance, usually a liquid, capable of dissolving another substance).It has been in commercial use since the early 1900s.A common use of tetrachlorethylene is to dry clean fabrics.etrachlorethylene, also known as tetrachloroethylene, perchloroethylene, PCE, or perc, is a commonly used solvent (a substance, usually a liquid, capable of dissolving another substance).