To the annoyance of some shareholders, Guangdong Tloong Technology Group Co.,Ltd (SZSE:300063) shares are down a considerable 36% in the last month, which continues a horrid run for the company. Longer-term shareholders would now have taken a real hit with the stock declining 9.6% in the last year.

Although its price has dipped substantially, Guangdong Tloong Technology GroupLtd's price-to-earnings (or "P/E") ratio of 41.2x might still make it look like a strong sell right now compared to the market in China, where around half of the companies have P/E ratios below 26x and even P/E's below 16x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/E.

For instance, Guangdong Tloong Technology GroupLtd's receding earnings in recent times would have to be some food for thought. One possibility is that the P/E is high because investors think the company will still do enough to outperform the broader market in the near future. If not, then existing shareholders may be quite nervous about the viability of the share price.

Is There Enough Growth For Guangdong Tloong Technology GroupLtd?

Guangdong Tloong Technology GroupLtd's P/E ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the market.

Taking a look back first, the company's earnings per share growth last year wasn't something to get excited about as it posted a disappointing decline of 37%. As a result, earnings from three years ago have also fallen 30% overall. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Weighing that medium-term earnings trajectory against the broader market's one-year forecast for expansion of 41% shows it's an unpleasant look.

In light of this, it's alarming that Guangdong Tloong Technology GroupLtd's P/E sits above the majority of other companies. It seems most investors are ignoring the recent poor growth rate and are hoping for a turnaround in the company's business prospects. There's a very good chance existing shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with the recent negative growth rates.

What We Can Learn From Guangdong Tloong Technology GroupLtd's P/E?

Guangdong Tloong Technology GroupLtd's shares may have retreated, but its P/E is still flying high. Generally, our preference is to limit the use of the price-to-earnings ratio to establishing what the market thinks about the overall health of a company.

We've established that Guangdong Tloong Technology GroupLtd currently trades on a much higher than expected P/E since its recent earnings have been in decline over the medium-term. Right now we are increasingly uncomfortable with the high P/E as this earnings performance is highly unlikely to support such positive sentiment for long. If recent medium-term earnings trends continue, it will place shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

There are also other vital risk factors to consider and we've discovered 3 warning signs for Guangdong Tloong Technology GroupLtd (1 shouldn't be ignored!) that you should be aware of before investing here.

Of course, you might find a fantastic investment by looking at a few good candidates. So take a peek at this free list of companies with a strong growth track record, trading on a low P/E.

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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.