Shenzhen MinDe Electronics Technology Ltd. (SZSE:300656) shares have continued their recent momentum with a 39% gain in the last month alone. Taking a wider view, although not as strong as the last month, the full year gain of 24% is also fairly reasonable.

After such a large jump in price, Shenzhen MinDe Electronics Technology may be sending strong sell signals at present with a price-to-sales (or "P/S") ratio of 14.9x, when you consider almost half of the companies in the Electronic industry in China have P/S ratios under 4.6x and even P/S lower than 2x aren't out of the ordinary. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/S.

How Has Shenzhen MinDe Electronics Technology Performed Recently?

For instance, Shenzhen MinDe Electronics Technology's receding revenue in recent times would have to be some food for thought. 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. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

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

Shenzhen MinDe Electronics Technology's 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.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 14%. The last three years don't look nice either as the company has shrunk revenue by 30% in aggregate. So unfortunately, we have to acknowledge that the company has not done a great job of growing revenue over that time.

Weighing that medium-term revenue trajectory against the broader industry's one-year forecast for expansion of 27% shows it's an unpleasant look.

With this in mind, we find it worrying that Shenzhen MinDe Electronics Technology's P/S exceeds that of its industry peers. 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 Shenzhen MinDe Electronics Technology's P/S

Shares in Shenzhen MinDe Electronics Technology have seen a strong upwards swing lately, which has really helped boost its P/S figure. 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've established that Shenzhen MinDe Electronics Technology currently trades on a much higher than expected P/S since its recent revenues have been in decline over the medium-term. With a revenue decline on investors' minds, the likelihood of a souring sentiment is quite high which could send the P/S back in line with what we'd expect. 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.

There are also other vital risk factors to consider before investing and we've discovered 2 warning signs for Shenzhen MinDe Electronics Technology 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.