According to Stockhouse (Ratios)The book value of Gratomic is 0.14$ Efficiency Ratios Asset Turnover - Receivable Turnover - Inventory Turnover - Valuation Ratios PE Ratio -5.10 Book Value Of Equity Per Share 0.14 P/E High - Last 5 Years -4.30 P/E Low - Last 5 Years -5.30