Despite an already strong run, North Chemical Industries Co., Ltd. (SZSE:002246) shares have been powering on, with a gain of 25% in the last thirty days. Notwithstanding the latest gain, the annual share price return of 8.3% isn't as impressive.

After such a large jump in price, given close to half the companies operating in China's Chemicals industry have price-to-sales ratios (or "P/S") below 2.2x, you may consider North Chemical Industries as a stock to potentially avoid with its 2.7x P/S ratio. Although, it's not wise to just take the P/S at face value as there may be an explanation why it's as high as it is.

What Does North Chemical Industries' P/S Mean For Shareholders?

As an illustration, revenue has deteriorated at North Chemical Industries over the last year, which is not ideal at all. It might be that many expect the company to still outplay most other companies over the coming period, which has kept the P/S from collapsing. If not, then existing shareholders may be quite nervous about the viability of the share price.

Is There Enough Revenue Growth Forecasted For North Chemical Industries?

North Chemical Industries' P/S ratio would be typical for a company that's expected to deliver solid growth, and importantly, perform better than the industry.

Retrospectively, the last year delivered a frustrating 14% 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 18% 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 23% 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 alarming that North Chemical Industries' P/S sits above the majority of other companies. Apparently many investors in the company are way more bullish than recent times would indicate and aren't willing to let go of their stock at any price. There's a very 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 Bottom Line On North Chemical Industries' P/S

North Chemical Industries' P/S is on the rise since its shares have risen strongly. 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.

We've established that North Chemical Industries currently trades on a much higher than expected P/S since its recent revenues have been in decline over the medium-term. When we see revenue heading backwards and underperforming the industry forecasts, we feel the possibility of the share price declining is very real, bringing the P/S back into the realm of reasonability. Should recent medium-term revenue trends persist, it would pose a significant risk to existing shareholders' investments and prospective investors will have a hard time accepting the current value of the stock.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 4 warning signs with North Chemical Industries (at least 1 which is significant), and understanding them should be part of your investment process.

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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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.