Investors interested in stocks from the Chemical - Specialty sector have probably already heard of H. B. Fuller (FUL) and PPG Industries (PPG) . But which of these two stocks presents investors with the better value opportunity right now? Let's take a closer look.We have found that the best way to discover great value opportunities is to pair a strong Zacks Rank with a great grade in the Value category of our Style Scores system. The Zacks Rank favors stocks with strong earnings estimate revision trends, an ...