Shenzhen Deren Electronic Co., Ltd. (SZSE:002055) shareholders would be excited to see that the share price has had a great month, posting a 33% gain and recovering from prior weakness. Unfortunately, the gains of the last month did little to right the losses of the last year with the stock still down 26% over that time.

Although its price has surged higher, Shenzhen Deren Electronic may still look like a strong buying opportunity at present with its price-to-sales (or "P/S") ratio of 0.8x, considering almost half of all companies in the Electronic industry in China have P/S ratios greater than 3.9x and even P/S higher than 8x aren't out of the ordinary. However, the P/S might be quite low for a reason and it requires further investigation to determine if it's justified.

How Has Shenzhen Deren Electronic Performed Recently?

For instance, Shenzhen Deren Electronic's receding revenue in recent times would have to be some food for thought. It might be that many expect the disappointing revenue performance to continue or accelerate, which has repressed the P/S. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

What Are Revenue Growth Metrics Telling Us About The Low P/S?

There's an inherent assumption that a company should far underperform the industry for P/S ratios like Shenzhen Deren Electronic's to be considered reasonable.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 29%. As a result, revenue from three years ago have also fallen 33% overall. Therefore, it's fair to say the revenue growth recently has been undesirable for the company.

In contrast to the company, the rest of the industry is expected to grow by 26% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

In light of this, it's understandable that Shenzhen Deren Electronic's P/S would sit below the majority of other companies. However, we think shrinking revenues are unlikely to lead to a stable P/S over the longer term, which could set up shareholders for future disappointment. Even just maintaining these prices could be difficult to achieve as recent revenue trends are already weighing down the shares.

The Key Takeaway

Shenzhen Deren Electronic's recent share price jump still sees fails to bring its P/S alongside the industry median. Using the price-to-sales ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

As we suspected, our examination of Shenzhen Deren Electronic revealed its shrinking revenue over the medium-term is contributing to its low P/S, given the industry is set to grow. At this stage investors feel the potential for an improvement in revenue isn't great enough to justify a higher P/S ratio. If recent medium-term revenue trends continue, it's hard to see the share price moving strongly in either direction in the near future under these circumstances.

Plus, you should also learn about these 2 warning signs we've spotted with Shenzhen Deren Electronic.

If companies with solid past earnings growth is up your alley, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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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.