Here at Zacks, we focus on our proven ranking system, which places an emphasis on earnings estimates and estimate revisions, to find winning stocks. But we also understand that investors develop their own strategies, so we are constantly looking at the latest trends in value, growth, and momentum to find strong companies for our readers.Looking at the history of these trends, perhaps none is more beloved than value investing. This strategy simply looks to identify companies that are being undervalued by the broader market. Value investors use tried-and-true metrics and fundamental analysis to find companies that they believe are undervalued at their current share price levels.Luckily, Zacks has developed its own Style Scores system in an effort to find stocks with specific traits. Value investors will be interested in the system's "Value" category. Stocks with both "A" grades in the Value category and high Zacks Ranks are among the strongest value stocks on the market right now.Unique Fabricating (UFAB) is a stock many investors are watching right now. UFAB is currently sporting a Zacks Rank of #1 (Strong Buy) and an A for Value. The stock has a Forward P/E ratio of 8.65. This compares to its industry's average Forward P/E of 13.27. UFAB's Forward P/E has been as high as 11.76 and as low as 5, with a median of 6.53, all within the past year.Another valuation metric that we should highlight is UFAB's P/B ratio of 0.93. Investors use the P/B ratio to look at a stock's market value versus its book value, which is defined as total assets minus total liabilities. UFAB's current P/B looks attractive when compared to its industry's average P/B of 2.75. UFAB's P/B has been as high as 1.22 and as low as 0.55, with a median of 0.72, over the past year.Value investors also frequently use the P/S ratio. This metric is found by dividing a stock's price with the company's revenue. This is a popular metric because sales are harder to manipulate on an income statement, so they are often considered a better performance indicator. UFAB has a P/S ratio of 0.25. This compares to its industry's average P/S of 0.44.These are only a few of the key metrics included in Unique Fabricating's strong Value grade, but they help show that the stock is likely undervalued right now. When factoring in the strength of its earnings outlook, UFAB looks like an impressive value stock at the moment.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Unique Fabricating, Inc. (UFAB): Free Stock Analysis Report To read this article on Zacks.com click here.