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D
& H Heat Technology, Inc./dba P.A. Grinnell Co. , a
woman owned company established in 1989 by Patrycya Ann
(Grinnell) Hill in Olmsted Falls, Ohio for the sole
purpose of the invention of Koolmat Insulation.
Committed, to making a positive difference, by
providing a middle range insulation good to 10000 degrees
which could be used inside or outside, would Stop
Heat/Lower Sound and Save Space.
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