$Corning (GLW.US)$In an analysis two years ago, the stock pr...

The American company, which was listed in 1945, is mainly engaged in optical communication, display technology, special materials, environmental technology, etc. The main markets are in the US and China, and the current price is 31.47.

There has been a slight increase in revenue fluctuations over the past 5 years, with an average growth rate of 2.2%. Operating profit fluctuated sharply due to gross margin and expense ratios. Overall, it has shrunk over the past 5 years, and net profit is similar.

The current price-earnings ratio is 46.3, and the 5-year average net profit of 850 million yuan corresponds to a price-earnings ratio of 31.7 and a dividend ratio of 3.6%. The valuation is not very attractive.