You may think that with a price-to-sales (or "P/S") ratio of 0.7x Shanghai Electric Wind Power Group Co., Ltd. (SHSE:688660) is a stock worth checking out, seeing as almost half of all the Electrical companies in China have P/S ratios greater than 2x and even P/S higher than 4x aren't out of the ordinary. Although, it's not wise to just take the P/S at face value as there may be an explanation why it's limited.

What Does Shanghai Electric Wind Power Group's P/S Mean For Shareholders?

For example, consider that Shanghai Electric Wind Power Group's financial performance has been poor lately as its revenue has been in decline. It might be that many expect the disappointing revenue performance to continue or accelerate, which has repressed the P/S. However, if this doesn't eventuate then existing shareholders may be feeling optimistic about the future direction of the share price.

What Are Revenue Growth Metrics Telling Us About The Low P/S?

The only time you'd be truly comfortable seeing a P/S as low as Shanghai Electric Wind Power Group's is when the company's growth is on track to lag the industry.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 36%. This means it has also seen a slide in revenue over the longer-term as revenue is down 74% in total over the last three years. Therefore, it's fair to say the revenue growth recently has been undesirable for the company.

Comparing that to the industry, which is predicted to deliver 23% growth in the next 12 months, the company's downward momentum based on recent medium-term revenue results is a sobering picture.

With this in mind, we understand why Shanghai Electric Wind Power Group's P/S is lower than most of its industry peers. Nonetheless, there's no guarantee the P/S has reached a floor yet with revenue going in reverse. There's potential for the P/S to fall to even lower levels if the company doesn't improve its top-line growth.

The Bottom Line On Shanghai Electric Wind Power Group's P/S

We'd say the price-to-sales ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

As we suspected, our examination of Shanghai Electric Wind Power Group revealed its shrinking revenue over the medium-term is contributing to its low P/S, given the industry is set to grow. At this stage investors feel the potential for an improvement in revenue isn't great enough to justify a higher P/S ratio. Given the current circumstances, it seems unlikely that the share price will experience any significant movement in either direction in the near future if recent medium-term revenue trends persist.

Before you settle on your opinion, we've discovered 2 warning signs for Shanghai Electric Wind Power Group that you should be aware of.

If companies with solid past earnings growth is up your alley, 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.