Hardwick EPD9-79KW659A, ED9-71A539R, D-456, D-170, EPD9-79KA659A, ED1-76W19, EPD8-69KY919W, EPD8-69KY919A, D-445, ED9-71W539R. It uses high-resistance coil wiring to generate and conduct heat to the cooktop surface when electric current passes through.
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