Whats the industry standard profit multiples used for valuation?...

Whats the industry standard profit multiples used for valuation?
I was going to say x5yrs based on just the 40,000tns of the 2 furnaces @ US$2,000 (obviously that just revenue). With cheap power, monopoly on local mines  in bargaining cheap ore and local employment; expense cant rack up to be a great deal of that figure. Also if you look at their business plan with growth of at least  8 furnaces with in this time frame...... This number is huge. Plus lets not forget the estimated US$1 million profit per month expected once DSO comes through for the duration of the whole construction of these furnaces!