Sunfly Intelligent Technology Co., LTD (SZSE:300423) shares have had a really impressive month, gaining 31% after a shaky period beforehand. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 22% in the last twelve months.

Even after such a large jump in price, there still wouldn't be many who think Sunfly Intelligent Technology's price-to-sales (or "P/S") ratio of 2.5x is worth a mention when the median P/S in China's Electrical industry is similar at about 2.1x. 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 Has Sunfly Intelligent Technology Performed Recently?

As an illustration, revenue has deteriorated at Sunfly Intelligent Technology over the last year, which is not ideal at all. It might be that many expect the company to put the disappointing revenue performance behind them over the coming period, which has kept the P/S from falling. If not, then existing shareholders may be a little nervous about the viability of the share price.

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 Sunfly Intelligent Technology's to be considered reasonable.

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 36%. This means it has also seen a slide in revenue over the longer-term as revenue is down 60% in total over the last three years. So unfortunately, we have to acknowledge that the company has not done a great job of growing revenue over that time.

In contrast to the company, the rest of the industry is expected to grow by 23% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

In light of this, it's somewhat alarming that Sunfly Intelligent Technology's P/S sits in line with the majority of other companies. Apparently many investors in the company are way less bearish than recent times would indicate and aren't willing to let go of their stock right now. Only the boldest would assume these prices are sustainable as a continuation of recent revenue trends is likely to weigh on the share price eventually.

The Bottom Line On Sunfly Intelligent Technology's P/S

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

We find it unexpected that Sunfly Intelligent Technology trades at a P/S ratio that is comparable to the rest of the industry, despite experiencing declining revenues during the medium-term, while the industry as a whole is expected to grow. When we see revenue heading backwards in the context of growing industry forecasts, it'd make sense to expect a possible share price decline on the horizon, sending the moderate P/S lower. Unless the the circumstances surrounding the recent medium-term improve, it wouldn't be wrong to expect a a difficult period ahead for the company's shareholders.

There are also other vital risk factors to consider and we've discovered 3 warning signs for Sunfly Intelligent Technology (2 shouldn't be ignored!) that you should be aware of before investing here.

If strong companies turning a profit tickle your fancy, then you'll want to check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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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.