May I know where you obtain those kraft, liner, and medium international price data? Thanks

Good article and thanks for the sharing. I once used (RDCFA) for my stock valuation to evaluate how much market value the stock for the past 5 years(I look retrospectively) and use the calculated discount rate as a common yardstick to see if one's an overvalued/undervalued stock. However, from your article it makes a clearer picture for me that the current market valuation of the stock(1.91) reflects the future expectations of investors in this share but not the historical expectations of investors.