Suzhou Mingzhi Technology Co., Ltd. (SHSE:688355) shares have had a really impressive month, gaining 26% after a shaky period beforehand. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 47% in the last twelve months.

Since its price has surged higher, given around half the companies in China's Metals and Mining industry have price-to-sales ratios (or "P/S") below 1.4x, you may consider Suzhou Mingzhi Technology as a stock to avoid entirely with its 3.4x 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 so lofty.

What Does Suzhou Mingzhi Technology's P/S Mean For Shareholders?

As an illustration, revenue has deteriorated at Suzhou Mingzhi Technology over the last year, which is not ideal at all. One possibility is that the P/S is high because investors think the company will still do enough to outperform the broader industry in the near future. If not, then existing shareholders may be quite nervous about the viability of the share price.

Do Revenue Forecasts Match The High P/S Ratio?

The only time you'd be truly comfortable seeing a P/S as steep as Suzhou Mingzhi Technology's is when the company's growth is on track to outshine the industry decidedly.

Taking a look back first, the company's revenue growth last year wasn't something to get excited about as it posted a disappointing decline of 2.4%. This means it has also seen a slide in revenue over the longer-term as revenue is down 17% in total over the last three years. 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 15% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

With this in mind, we find it worrying that Suzhou Mingzhi Technology's P/S exceeds that of its industry peers. 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 heavily on the share price eventually.

The Final Word

Shares in Suzhou Mingzhi Technology have seen a strong upwards swing lately, which has really helped boost its P/S figure. 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.

Our examination of Suzhou Mingzhi Technology revealed its shrinking revenue over the medium-term isn't resulting in a P/S as low as we expected, given the industry is set to grow. 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 is also worth noting that we have found 4 warning signs for Suzhou Mingzhi Technology (2 are a bit unpleasant!) that you need to take into consideration.

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.