CSG Smart Science&Technology Co.,Ltd. (SZSE:300222) shares have continued their recent momentum with a 29% gain in the last month alone. While recent buyers may be laughing, long-term holders might not be as pleased since the recent gain only brings the stock back to where it started a year ago.

Although its price has surged higher, there still wouldn't be many who think CSG Smart Science&TechnologyLtd's price-to-sales (or "P/S") ratio of 2x is worth a mention when the median P/S in China's Electrical industry is similar at about 2.1x. While this might not raise any eyebrows, if the P/S ratio is not justified investors could be missing out on a potential opportunity or ignoring looming disappointment.

How CSG Smart Science&TechnologyLtd Has Been Performing

As an illustration, revenue has deteriorated at CSG Smart Science&TechnologyLtd over the last year, which is not ideal at all. One possibility is that the P/S is moderate because investors think the company might still do enough to be in line with the broader industry in the near future. If not, then existing shareholders may be a little nervous about the viability of the share price.

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

The only time you'd be comfortable seeing a P/S like CSG Smart Science&TechnologyLtd's is when the company's growth is tracking the industry closely.

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 9.7%. This has erased any of its gains during the last three years, with practically no change in revenue being achieved in total. Accordingly, shareholders probably wouldn't have been overly satisfied with the unstable medium-term growth rates.

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

With this in mind, we find it intriguing that CSG Smart Science&TechnologyLtd's P/S is comparable to that of its industry peers. It seems most investors are ignoring the fairly limited recent growth rates and are willing to pay up for exposure to the stock. Maintaining these prices will be difficult to achieve as a continuation of recent revenue trends is likely to weigh down the shares eventually.

What Does CSG Smart Science&TechnologyLtd's P/S Mean For Investors?

CSG Smart Science&TechnologyLtd appears to be back in favour with a solid price jump bringing its P/S back in line with other companies in the industry While the price-to-sales ratio shouldn't be the defining factor in whether you buy a stock or not, it's quite a capable barometer of revenue expectations.

We've established that CSG Smart Science&TechnologyLtd's average P/S is a bit surprising since its recent three-year growth is lower than the wider industry forecast. Right now we are uncomfortable with the P/S as this revenue performance isn't likely to support a more positive sentiment for long. Unless there is a significant improvement in the company's medium-term performance, it will be difficult to prevent the P/S ratio from declining to a more reasonable level.

Don't forget that there may be other risks. For instance, we've identified 1 warning sign for CSG Smart Science&TechnologyLtd that you should be aware of.

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.