People always use the expression "fold" incorrectly. Each "fold" is doubling the number, so a 1 fold increase, means twice as much. A 2 fold increase means 4 times as much, a 3 fold, 8 times, a 4 fold, 16 times and so on...
a ten-fold increase would mean multiplying the existing output by 1024, so their new production figure would go from 50,000 to over 50,000,000. Now, that would make some headlines.
Sorry, just a gripe of mine. (Folding a piece of paper. with each fold, you double the thickness, or number of sheets).