The latest news for investors is that OPEC has persuaded non-OPEC members to cut oil productions. This news would likely bring the focus back to oil-related stocks. Would prices of oil-related stock rally next?On the SGX, the two well-known oil-related stocks are Keppel Corporation stock and Sembcorp Industries Limited stock. Though not purely an oil play since both companies are diversified conglomerates, the two stocks are well-regarded as the “big brothers” in energy and offshore and marine industries. So between the two, which is a better Buy? I have some data ready for comparison: Sembcorp Marine stock has a Price-to-Book ratio of 0.812, offers investors a dividend yield of 3.44%, is trading at a Price-to-Earnings ratio of 19.5. With a last traded price of $2.91, the stock is almost 33% up from its 52-week low of $2.19. Debt-to-Earnings ratio wise, Sembcorp Marine’s ratio is ......