Investors interested in Industrial Services stocks are likely familiar with Siemens AG (SIEGY) and W.W. Grainger (GWW) . But which of these two stocks is more attractive to value investors? We'll need to take a closer look to find out. The best way to find great value stocks is to pair a strong Zacks Rank with an impressive grade in the Value category of our Style Scores system. The Zacks Rank favors stocks with strong earnings estimate revision trends, and our Style Scores highlight companies with specific ...