It's nice to see the Anhui Bossco Environmental Protection Technology Co.,Ltd. (SZSE:300422) share price up 21% in a week. But that can't change the reality that over the longer term (five years), the returns have been really quite dismal. The share price has failed to impress anyone , down a sizable 53% during that time. So is the recent increase sufficient to restore confidence in the stock? Not yet. We'd err towards caution given the long term under-performance.

The recent uptick of 21% could be a positive sign of things to come, so let's take a look at historical fundamentals.

Anhui Bossco Environmental Protection TechnologyLtd wasn't profitable in the last twelve months, it is unlikely we'll see a strong correlation between its share price and its earnings per share (EPS). Arguably revenue is our next best option. When a company doesn't make profits, we'd generally hope to see good revenue growth. As you can imagine, fast revenue growth, when maintained, often leads to fast profit growth.

In the last five years Anhui Bossco Environmental Protection TechnologyLtd saw its revenue shrink by 12% per year. That's definitely a weaker result than most pre-profit companies report. Arguably, the market has responded appropriately to this business performance by sending the share price down 9% (annualized) in the same time period. We don't generally like to own companies that lose money and don't grow revenues. You might be better off spending your money on a leisure activity. You'd want to research this company pretty thoroughly before buying, it looks a bit too risky for us.

The company's revenue and earnings (over time) are depicted in the image below (click to see the exact numbers).

It's probably worth noting that the CEO is paid less than the median at similar sized companies. It's always worth keeping an eye on CEO pay, but a more important question is whether the company will grow earnings throughout the years. Dive deeper into the earnings by checking this interactive graph of Anhui Bossco Environmental Protection TechnologyLtd's earnings, revenue and cash flow.

A Different Perspective

Anhui Bossco Environmental Protection TechnologyLtd shareholders are down 22% for the year, but the market itself is up 3.3%. Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 9% over the last half decade. Generally speaking long term share price weakness can be a bad sign, though contrarian investors might want to research the stock in hope of a turnaround. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. Take risks, for example - Anhui Bossco Environmental Protection TechnologyLtd has 2 warning signs (and 1 which shouldn't be ignored) we think you should know about.

If you are like me, then you will not want to miss this free list of undervalued small caps that insiders are buying.

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on Chinese exchanges.

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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.