Shanghai XFH Technology Co., Ltd (SZSE:300890) shares have continued their recent momentum with a 25% gain in the last month alone. Unfortunately, despite the strong performance over the last month, the full year gain of 5.0% isn't as attractive.

After such a large jump in price, given close to half the companies operating in China's Electrical industry have price-to-sales ratios (or "P/S") below 2.4x, you may consider Shanghai XFH Technology as a stock to potentially avoid with its 2.9x 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 Shanghai XFH Technology's Recent Performance Look Like?

For instance, Shanghai XFH 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. 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?

There's an inherent assumption that a company should outperform the industry for P/S ratios like Shanghai XFH Technology's to be considered reasonable.

Retrospectively, the last year delivered a frustrating 32% decrease to the company's top line. Even so, admirably revenue has lifted 82% in aggregate from three years ago, notwithstanding the last 12 months. Accordingly, while they would have preferred to keep the run going, shareholders would definitely welcome the medium-term rates of revenue growth.

Comparing the recent medium-term revenue trends against the industry's one-year growth forecast of 25% shows it's noticeably less attractive.

With this in mind, we find it worrying that Shanghai XFH 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. 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

Shanghai XFH Technology's P/S is on the rise since its shares have risen strongly. 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.

The fact that Shanghai XFH Technology currently trades on a higher P/S relative to the industry is an oddity, since its recent three-year growth is lower than the wider industry forecast. When we observe slower-than-industry revenue growth alongside a high P/S ratio, we assume there to be a significant risk of the share price decreasing, which would result in a lower P/S ratio. Unless the recent medium-term conditions improve markedly, it's very challenging to accept these the share price as being reasonable.

There are also other vital risk factors to consider and we've discovered 5 warning signs for Shanghai XFH Technology (1 is significant!) that you should be aware of before investing here.

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.