What company proclaimed, "Progress is our most important product"?

Ronald Reagan.

Oh, all right, General Electric.

Hello: I'm Ronald Reagan speaking for General Electric. At General Electric, you know, "PROGRESS IS OUR MOST IMPORTANT PRODUCT".

http://www.smecc.org/frontiers_of_progress_-_1961_sales_meeting.htm#reagan

But I remember it from GE's sponsorship of "The College Bowl" in the 60s. (Yah, I've been a trivia nut THAT long!)
https://en.wikipedia.org/wiki/College_Bowl

Hello: I'm Ronald Reagan speaking for General Electric. At General Electric, you know, "PROGRESS IS OUR MOST IMPORTANT PRODUCT". But, all progress must have a starting point. All great human enterprises begin at a frontier. The pioneering of hostile lands. ..the mushrooming of the Atomic Age with its mixed blessing of destruction and construction. ..the rolling back of space frontiers beyond the planets to the stars. ..and the beginning of the information-handling revolution. ALL these had -a common starting point --a frontier of PROGRESS.
http://www.smecc.org/frontiers_of_progress_-_1961_sales_meeting.htm