The General Elevator Co., Ltd (SZSE:300931) share price has done very well over the last month, posting an excellent gain of 42%. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 15% in the last twelve months.

Although its price has surged higher, there still wouldn't be many who think General Elevator's price-to-sales (or "P/S") ratio of 3.2x is worth a mention when the median P/S in China's Machinery industry is similar at about 2.8x. Although, it's not wise to simply ignore the P/S without explanation as investors may be disregarding a distinct opportunity or a costly mistake.

How General Elevator Has Been Performing

The revenue growth achieved at General Elevator over the last year would be more than acceptable for most companies. Perhaps the market is expecting future revenue performance to only keep up with the broader industry, which has keeping the P/S in line with expectations. 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 not quite in favour.

Do Revenue Forecasts Match The P/S Ratio?

There's an inherent assumption that a company should be matching the industry for P/S ratios like General Elevator's to be considered reasonable.

If we review the last year of revenue growth, the company posted a terrific increase of 25%. As a result, it also grew revenue by 10% in total over the last three years. So we can start by confirming that the company has actually done a good job of growing revenue over that time.

Comparing the recent medium-term revenue trends against the industry's one-year growth forecast of 23% shows it's noticeably less attractive.

In light of this, it's curious that General Elevator's P/S sits in line with the majority of other companies. Apparently many investors in the company are less bearish than recent times would indicate and aren't willing to let go of their stock right now. Maintaining these prices will be difficult to achieve as a continuation of recent revenue trends is likely to weigh down the shares eventually.

The Key Takeaway

General Elevator appears to be back in favour with a solid price jump bringing its P/S back in line with other companies in the industry 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.

We've established that General Elevator's average P/S is a bit surprising since its recent three-year growth is lower than the wider industry forecast. When we see weak revenue with slower than industry growth, we suspect the share price is at risk of declining, bringing the P/S back in line with expectations. If recent medium-term revenue trends continue, the probability of a share price decline will become quite substantial, placing shareholders at risk.

And what about other risks? Every company has them, and we've spotted 4 warning signs for General Elevator (of which 2 are a bit unpleasant!) you should know about.

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.