Unfortunately for some shareholders, the Sunray Engineering Group Limited (HKG:8616) share price has dived 28% in the last thirty days, prolonging recent pain. Instead of being rewarded, shareholders who have already held through the last twelve months are now sitting on a 42% share price drop.

In spite of the heavy fall in price, you could still be forgiven for feeling indifferent about Sunray Engineering Group's P/S ratio of 0.2x, since the median price-to-sales (or "P/S") ratio for the Construction industry in Hong Kong is about the same. While this might not raise any eyebrows, if the P/S ratio is not justified investors could be missing out on a potential opportunity or ignoring looming disappointment.

What Does Sunray Engineering Group's Recent Performance Look Like?

For example, consider that Sunray Engineering Group's financial performance has been poor lately as its revenue has been in decline. One possibility is that the P/S is moderate because investors think the company might still do enough to be in line with the broader industry in the near future. If not, then existing shareholders may be a little nervous about the viability of the share price.

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

Sunray Engineering Group's P/S ratio would be typical for a company that's only expected to deliver moderate growth, and importantly, perform in line with the industry.

Retrospectively, the last year delivered a frustrating 26% decrease to the company's top line. This means it has also seen a slide in revenue over the longer-term as revenue is down 7.3% in total over the last three years. Accordingly, shareholders would have felt downbeat about the medium-term rates of revenue growth.

Comparing that to the industry, which is predicted to deliver 10% growth in the next 12 months, the company's downward momentum based on recent medium-term revenue results is a sobering picture.

In light of this, it's somewhat alarming that Sunray Engineering Group's P/S sits in line with the majority of other companies. 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 revenue trends is likely to weigh on the share price eventually.

What We Can Learn From Sunray Engineering Group's P/S?

With its share price dropping off a cliff, the P/S for Sunray Engineering Group looks to be in line with the rest of the Construction industry. It's argued the price-to-sales ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

We find it unexpected that Sunray Engineering Group trades at a P/S ratio that is comparable to the rest of the industry, despite experiencing declining revenues during the medium-term, while the industry as a whole is expected to grow. Even though it matches the industry, we're uncomfortable with the current P/S ratio, as this dismal revenue performance is unlikely to support a more positive sentiment for long. Unless the the circumstances surrounding the recent medium-term improve, it wouldn't be wrong to expect a a difficult period ahead for the company's shareholders.

And what about other risks? Every company has them, and we've spotted 2 warning signs for Sunray Engineering Group you should know about.

If these risks are making you reconsider your opinion on Sunray Engineering Group, explore our interactive list of high quality stocks to get an idea of what else is out there.

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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.