Investors looking for stocks in the Chemical - Specialty sector might want to consider either Axalta Coating Systems (AXTA) or Diversey Holdings, Ltd. (DSEY). But which of these two stocks is more attractive to value investors? We'll need to take a closer look to find out.There are plenty of strategies for discovering value stocks, but we have found that pairing a strong Zacks Rank with an impressive grade in the Value category of our Style Scores system produces the best returns. The proven Zacks Rank puts an emphasis on earnings estimates and estimate revisions, while our Style Scores work to identify stocks with specific traits.Right now, both Axalta Coating Systems and Diversey Holdings, Ltd. are sporting a Zacks Rank of # 2 (Buy). This system places an emphasis on companies that have seen positive earnings estimate revisions, so investors should feel comfortable knowing that these stocks have improving earnings outlooks. But this is only part of the picture for value investors.Value investors also tend to look at a number of traditional, tried-and-true figures to help them find stocks that they believe are undervalued at their current share price levels.Our Value category grades stocks based on a number of key metrics, including the tried-and-true P/E ratio, the P/S ratio, earnings yield, and cash flow per share, as well as a variety of other fundamentals that value investors frequently use.AXTA currently has a forward P/E ratio of 14.76, while DSEY has a forward P/E of 29.93. We also note that AXTA has a PEG ratio of 0.66. This popular metric is similar to the widely-known P/E ratio, with the difference being that the PEG ratio also takes into account the company's expected earnings growth rate. DSEY currently has a PEG ratio of 2.11.Another notable valuation metric for AXTA is its P/B ratio of 5.03. The P/B ratio is used to compare a stock's market value with its book value, which is defined as total assets minus total liabilities. For comparison, DSEY has a P/B of 8.83.These metrics, and several others, help AXTA earn a Value grade of B, while DSEY has been given a Value grade of D.Both AXTA and DSEY are impressive stocks with solid earnings outlooks, but based on these valuation figures, we feel that AXTA is the superior value option right now. Breakout Biotech Stocks with Triple-Digit Profit Potential The biotech sector is projected to surge beyond $775 billion by 2024 as scientists develop treatments for thousands of diseases. They’re also finding ways to edit the human genome to literally erase our vulnerability to these diseases. Zacks has just released Century of Biology: 7 Biotech Stocks to Buy Right Now to help investors profit from 7 stocks poised for outperformance. Our recent biotech recommendations have produced gains of +50%, +83% and +164% in as little as 2 months. The stocks in this report could perform even better.See these 7 breakthrough stocks now>>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 Axalta Coating Systems Ltd. (AXTA): Free Stock Analysis Report Diversey Holdings, Ltd. (DSEY): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research