Key Takeaways:Haier Smart Home has agreed to acquire Carrier Global’s commercial refrigeration business for $640 million, translating to a relatively low price-to-earnings (P/E) valuation of 11As a veteran of overseas acquisitions, the appliance maker will be looking to improve Carrier Commercial Refrigeration’s market-lagging performanceBy Bai Xin Rui Just a year after becoming a blue-chip stock with its inclusion in the benchmark Hang Seng Index, Haier Smart Home Co. Ltd. is cooking up another milestone with a major new acquisition. This time, the listed unit of Chinese appliance giant Haier…