WenYi Trinity Technology Co., Ltd (SHSE:600520) shareholders that were waiting for something to happen have been dealt a blow with a 25% share price drop in the last month. To make matters worse, the recent drop has wiped out a year's worth of gains with the share price now back where it started a year ago.

Even after such a large drop in price, you could still be forgiven for thinking WenYi Trinity Technology is a stock to steer clear of with a price-to-sales ratios (or "P/S") of 7.9x, considering almost half the companies in China's Machinery industry have P/S ratios below 2.5x. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/S.

How WenYi Trinity Technology Has Been Performing

For example, consider that WenYi Trinity Technology's financial performance has been poor lately as its revenue has been in decline. It might be that many expect the company to still outplay most other companies over the coming period, which has kept the P/S from collapsing. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

How Is WenYi Trinity Technology's Revenue Growth Trending?

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

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 26%. Regardless, revenue has managed to lift by a handy 22% in aggregate from three years ago, thanks to the earlier period of growth. Accordingly, while they would have preferred to keep the run going, shareholders would be roughly satisfied with the medium-term rates of revenue growth.

This is in contrast to the rest of the industry, which is expected to grow by 28% over the next year, materially higher than the company's recent medium-term annualised growth rates.

In light of this, it's alarming that WenYi Trinity Technology's P/S sits above the majority of other companies. 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 good chance existing shareholders are setting themselves up for future disappointment if the P/S falls to levels more in line with recent growth rates.

What We Can Learn From WenYi Trinity Technology's P/S?

Even after such a strong price drop, WenYi Trinity Technology's P/S still exceeds the industry median significantly. 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 WenYi Trinity 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. Right now we aren't comfortable with the high P/S as this revenue performance isn't likely to support such 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.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 1 warning sign with WenYi Trinity Technology, and understanding should be part of your investment process.

If you're unsure about the strength of WenYi Trinity Technology's business, why not explore our interactive list of stocks with solid business fundamentals for some other companies you may have missed.

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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.