Unfortunately for some shareholders, the Nanjing Sample Technology Company Limited (HKG:1708) share price has dived 28% in the last thirty days, prolonging recent pain. For any long-term shareholders, the last month ends a year to forget by locking in a 67% share price decline.

Even after such a large drop in price, it's still not a stretch to say that Nanjing Sample Technology's price-to-sales (or "P/S") ratio of 0.6x right now seems quite "middle-of-the-road" compared to the Electronic industry in Hong Kong, where the median P/S ratio is around 0.3x. 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.

How Has Nanjing Sample Technology Performed Recently?

Nanjing Sample Technology certainly has been doing a great job lately as it's been growing its revenue at a really rapid pace. The P/S is probably moderate because investors think this strong revenue growth might not be enough to outperform the broader industry in the near future. If that doesn't eventuate, then existing shareholders have reason to be feeling optimistic about the future direction of the share price.

How Is Nanjing Sample Technology's Revenue Growth Trending?

The only time you'd be comfortable seeing a P/S like Nanjing Sample Technology's is when the company's growth is tracking the industry closely.

Taking a look back first, we see that the company grew revenue by an impressive 54% last year. Still, revenue has fallen 66% in total from three years ago, which is quite disappointing. Accordingly, shareholders would have felt downbeat about the medium-term rates of revenue growth.

In contrast to the company, the rest of the industry is expected to grow by 24% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

In light of this, it's somewhat alarming that Nanjing Sample Technology'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.

The Final Word

Nanjing Sample Technology's plummeting stock price has brought its P/S back to a similar region as the rest of the industry. 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.

We find it unexpected that Nanjing Sample Technology 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. If recent medium-term revenue trends continue, it will place shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

Before you take the next step, you should know about the 3 warning signs for Nanjing Sample Technology (1 is a bit unpleasant!) that we have uncovered.

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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