Bjoern Wylezich It has been a rocky year for Air Products and Chemicals, Inc. (NYSE:APD) with shares down 13% from a year ago. However, investors got some much-needed relief on Thursday when shares popped over 10% in response to mixed earnings that simply were not as bad as feared. I last covered APD in May, rating shares a "buy," and since that recommendation, it has rallied 13% vs. the market's 4% gain. With new financial data and this appreciation, now is a good time to revisit Air Products. I remain bul ...