Those holding Chengdu Shengbang Seals Co.,Ltd. (SZSE:301233) shares would be relieved that the share price has rebounded 34% in the last thirty days, but it needs to keep going to repair the recent damage it has caused to investor portfolios. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 14% in the last twelve months.

Even after such a large jump in price, it's still not a stretch to say that Chengdu Shengbang SealsLtd's price-to-earnings (or "P/E") ratio of 29.6x right now seems quite "middle-of-the-road" compared to the market in China, where the median P/E ratio is around 31x. However, investors might be overlooking a clear opportunity or potential setback if there is no rational basis for the P/E.

The earnings growth achieved at Chengdu Shengbang SealsLtd over the last year would be more than acceptable for most companies. One possibility is that the P/E is moderate because investors think this respectable earnings growth might not be enough to outperform the broader market in the near future. If that doesn't eventuate, then existing shareholders probably aren't too pessimistic about the future direction of the share price.

Does Growth Match The P/E?

The only time you'd be comfortable seeing a P/E like Chengdu Shengbang SealsLtd's is when the company's growth is tracking the market closely.

If we review the last year of earnings growth, the company posted a terrific increase of 19%. Despite this strong recent growth, it's still struggling to catch up as its three-year EPS frustratingly shrank by 37% overall. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Comparing that to the market, which is predicted to deliver 41% growth in the next 12 months, the company's downward momentum based on recent medium-term earnings results is a sobering picture.

With this information, we find it concerning that Chengdu Shengbang SealsLtd is trading at a fairly similar P/E to the market. 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 earnings trends is likely to weigh on the share price eventually.

The Bottom Line On Chengdu Shengbang SealsLtd's P/E

Chengdu Shengbang SealsLtd's stock has a lot of momentum behind it lately, which has brought its P/E level with the market. Using the price-to-earnings 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've established that Chengdu Shengbang SealsLtd currently trades on a higher than expected P/E since its recent earnings have been in decline over the medium-term. Right now we are uncomfortable with the P/E as this earnings performance is unlikely to support a more positive sentiment for long. If recent medium-term earnings trends continue, it will place shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

Having said that, be aware Chengdu Shengbang SealsLtd is showing 1 warning sign in our investment analysis, you should know about.

It's important to make sure you look for a great company, not just the first idea you come across. So take a peek at this free list of interesting companies with strong recent earnings growth (and 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.