Gansu Golden Solar Co., Ltd (SZSE:300093) shareholders that were waiting for something to happen have been dealt a blow with a 26% share price drop in the last month. The drop over the last 30 days has capped off a tough year for shareholders, with the share price down 46% in that time.

Even after such a large drop in price, given around half the companies in China's Building industry have price-to-sales ratios (or "P/S") below 1.4x, you may still consider Gansu Golden Solar as a stock to avoid entirely with its 6.9x P/S ratio. However, the P/S might be quite high for a reason and it requires further investigation to determine if it's justified.

How Has Gansu Golden Solar Performed Recently?

For example, consider that Gansu Golden Solar's financial performance has been poor lately as its revenue has been in decline. Perhaps the market believes the company can do enough to outperform the rest of the industry in the near future, which is keeping the P/S ratio high. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

How Is Gansu Golden Solar's Revenue Growth Trending?

Gansu Golden Solar's P/S ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the industry.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 29%. This has soured the latest three-year period, which nevertheless managed to deliver a decent 16% overall rise in revenue. Accordingly, while they would have preferred to keep the run going, shareholders would be roughly satisfied with the medium-term rates of revenue growth.

Comparing the recent medium-term revenue trends against the industry's one-year growth forecast of 24% shows it's noticeably less attractive.

With this in mind, we find it worrying that Gansu Golden Solar's P/S exceeds that of its industry peers. It seems most investors are ignoring the fairly limited recent growth rates and are hoping for a turnaround in the company's business prospects. 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.

What Does Gansu Golden Solar's P/S Mean For Investors?

Gansu Golden Solar's shares may have suffered, but its P/S remains high. Typically, we'd caution against reading too much into price-to-sales ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

The fact that Gansu Golden Solar 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 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.

Before you take the next step, you should know about the 4 warning signs for Gansu Golden Solar that we have uncovered.

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.

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