Zhejiang Yangfan New Materials Co., Ltd. (SZSE:300637) shareholders have had their patience rewarded with a 58% share price jump in the last month. The last 30 days bring the annual gain to a very sharp 48%.

Since its price has surged higher, given around half the companies in China's Chemicals industry have price-to-sales ratios (or "P/S") below 2.2x, you may consider Zhejiang Yangfan New Materials as a stock to avoid entirely with its 5.1x P/S ratio. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/S.

How Zhejiang Yangfan New Materials Has Been Performing

For instance, Zhejiang Yangfan New Materials' receding revenue in recent times would have to be some food for thought. 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. However, if this isn't the case, investors might get caught out paying too much for the stock.

Do Revenue Forecasts Match The High P/S Ratio?

Zhejiang Yangfan New Materials' P/S ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the industry.

Retrospectively, the last year delivered a frustrating 18% decrease to the company's top line. Regardless, revenue has managed to lift by a handy 6.6% in aggregate from three years ago, thanks to the earlier period of growth. Accordingly, while they would have preferred to keep the run going, shareholders would be roughly satisfied with the medium-term rates of revenue growth.

Comparing the recent medium-term revenue trends against the industry's one-year growth forecast of 21% shows it's noticeably less attractive.

In light of this, it's alarming that Zhejiang Yangfan New Materials' P/S sits above the majority of other companies. It seems most investors are ignoring the fairly limited recent growth rates 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 heavily on the share price eventually.

The Key Takeaway

Zhejiang Yangfan New Materials' P/S has grown nicely over the last month thanks to a handy boost in the share price. Generally, our preference is to limit the use of the price-to-sales ratio to establishing what the market thinks about the overall health of a company.

Our examination of Zhejiang Yangfan New Materials revealed its poor three-year revenue trends aren't detracting from the P/S as much as we though, given they look worse than current industry expectations. Right now we aren't comfortable with the high P/S as this revenue performance isn't likely to support such positive sentiment for long. Unless the recent medium-term conditions improve markedly, it's very challenging to accept these the share price as being reasonable.

Don't forget that there may be other risks. For instance, we've identified 3 warning signs for Zhejiang Yangfan New Materials that you should be aware of.

It's important to make sure you look for a great company, not just the first idea you come across. So if growing profitability aligns with your idea of a great company, take a peek at this free list of interesting companies with strong recent earnings growth (and a low P/E).

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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.