With a price-to-earnings (or "P/E") ratio of 14.7x Shanxi Road & Bridge Co.,Ltd. (SZSE:000755) may be sending very bullish signals at the moment, given that almost half of all companies in China have P/E ratios greater than 32x and even P/E's higher than 59x are not unusual. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's so limited.

Earnings have risen at a steady rate over the last year for Shanxi Road & BridgeLtd, which is generally not a bad outcome. It might be that many expect the respectable earnings performance to degrade, which has repressed the P/E. If that doesn't eventuate, then existing shareholders may have reason to be optimistic about the future direction of the share price.

How Is Shanxi Road & BridgeLtd's Growth Trending?

In order to justify its P/E ratio, Shanxi Road & BridgeLtd would need to produce anemic growth that's substantially trailing the market.

Retrospectively, the last year delivered a decent 7.4% gain to the company's bottom line. Although, the latest three year period in total hasn't been as good as it didn't manage to provide any growth at all. Accordingly, shareholders probably wouldn't have been overly satisfied with the unstable medium-term growth rates.

Weighing that recent medium-term earnings trajectory against the broader market's one-year forecast for expansion of 37% shows it's noticeably less attractive on an annualised basis.

In light of this, it's understandable that Shanxi Road & BridgeLtd's P/E sits below the majority of other companies. It seems most investors are expecting to see the recent limited growth rates continue into the future and are only willing to pay a reduced amount for the stock.

The Bottom Line On Shanxi Road & BridgeLtd's P/E

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.

We've established that Shanxi Road & BridgeLtd maintains its low P/E on the weakness of its recent three-year growth being lower than the wider market forecast, as expected. At this stage investors feel the potential for an improvement in earnings isn't great enough to justify a higher P/E ratio. If recent medium-term earnings trends continue, it's hard to see the share price rising strongly in the near future under these circumstances.

Plus, you should also learn about this 1 warning sign we've spotted with Shanxi Road & BridgeLtd.

You might be able to find a better investment than Shanxi Road & BridgeLtd. If you want a selection of possible candidates, check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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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.