Zhejiang Jingxing Paper Joint Stock Co., Ltd.'s (SZSE:002067) price-to-earnings (or "P/E") ratio of 72x might make it look like a strong sell right now compared to the market in China, where around half of the companies have P/E ratios below 31x and even P/E's below 19x are quite common. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

As an illustration, earnings have deteriorated at Zhejiang Jingxing Paper over the last year, which is not ideal at all. One possibility is that the P/E is high because investors think the company will still do enough to outperform the broader market in the near future. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

See our latest analysis for Zhejiang Jingxing Paper

What Are Growth Metrics Telling Us About The High P/E?

In order to justify its P/E ratio, Zhejiang Jingxing Paper would need to produce outstanding growth well in excess of the market.

Retrospectively, the last year delivered a frustrating 75% decrease to the company's bottom line. This means it has also seen a slide in earnings over the longer-term as EPS is down 80% in total over the last three years. Accordingly, shareholders would have felt downbeat about the medium-term rates of earnings growth.

Weighing that medium-term earnings trajectory against the broader market's one-year forecast for expansion of 43% shows it's an unpleasant look.

With this information, we find it concerning that Zhejiang Jingxing Paper is trading at a P/E higher than the market. It seems most investors are ignoring the recent poor growth rate and are hoping for a turnaround in the company's business prospects. Only the boldest would assume these prices are sustainable as a continuation of recent earnings trends is likely to weigh heavily on the share price eventually.

The Final Word

Using the price-to-earnings ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

Our examination of Zhejiang Jingxing Paper revealed its shrinking earnings over the medium-term aren't impacting its high P/E anywhere near as much as we would have predicted, given the market is set to grow. Right now we are increasingly uncomfortable with the high P/E as this earnings performance is highly unlikely to support such positive sentiment for long. Unless the recent medium-term conditions improve markedly, it's very challenging to accept these prices as being reasonable.

You need to take note of risks, for example - Zhejiang Jingxing Paper has 2 warning signs (and 1 which doesn't sit too well with us) we think you should know about.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.