Sundiro Holding Co., Ltd. (SZSE:000571) shareholders that were waiting for something to happen have been dealt a blow with a 27% share price drop in the last month. The drop over the last 30 days has capped off a tough year for shareholders, with the share price down 12% in that time.

Even after such a large drop in price, it's still not a stretch to say that Sundiro Holding's price-to-sales (or "P/S") ratio of 1.6x right now seems quite "middle-of-the-road" compared to the Oil and Gas industry in China, where the median P/S ratio is around 1.1x. 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 Sundiro Holding's Recent Performance Look Like?

As an illustration, revenue has deteriorated at Sundiro Holding over the last year, which is not ideal at all. 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 you like the company, you'd at least be hoping this is the case so that you could potentially pick up some stock while it's not quite in favour.

Is There Some Revenue Growth Forecasted For Sundiro Holding?

There's an inherent assumption that a company should be matching the industry for P/S ratios like Sundiro Holding's to be considered reasonable.

Retrospectively, the last year delivered a frustrating 24% 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 8.2% in total over the last three years. Therefore, it's fair to say the revenue growth recently has been undesirable for the company.

Weighing that medium-term revenue trajectory against the broader industry's one-year forecast for expansion of 2.2% shows it's an unpleasant look.

In light of this, it's somewhat alarming that Sundiro Holding's P/S sits in line with the majority of other companies. Apparently many investors in the company are way less bearish than recent times would indicate and aren't willing to let go of their stock right now. There's a good chance existing shareholders are setting themselves up for future disappointment if the P/S falls to levels more in line with the recent negative growth rates.

What Does Sundiro Holding's P/S Mean For Investors?

Following Sundiro Holding's share price tumble, its P/S is just clinging on to the industry median P/S. Typically, we'd caution against reading too much into price-to-sales ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

Our look at Sundiro Holding revealed its shrinking revenues over the medium-term haven't impacted the P/S as much as we anticipated, given the industry is set 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 1 warning sign for Sundiro Holding you should know about.

Of course, profitable companies with a history of great earnings growth are generally safer bets. So you may wish to see this free collection of other companies that have reasonable P/E ratios and have grown earnings strongly.

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