Linktel Technologies Co., Ltd. (SZSE:301205) shareholders would be excited to see that the share price has had a great month, posting a 29% gain and recovering from prior weakness. The annual gain comes to 196% following the latest surge, making investors sit up and take notice.

Since its price has surged higher, Linktel Technologies may be sending strong sell signals at present with a price-to-sales (or "P/S") ratio of 22.6x, when you consider almost half of the companies in the Electronic industry in China have P/S ratios under 4.2x and even P/S lower than 2x aren't out of the ordinary. Although, it's not wise to just take the P/S at face value as there may be an explanation why it's so lofty.

How Linktel Technologies Has Been Performing

As an illustration, revenue has deteriorated at Linktel Technologies over the last year, which is not ideal at all. One possibility is that the P/S is high because investors think the company will still do enough to outperform the broader industry in the near future. If not, then existing shareholders may be quite nervous about the viability of the share price.

Do Revenue Forecasts Match The High P/S Ratio?

There's an inherent assumption that a company should far outperform the industry for P/S ratios like Linktel Technologies' 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 22%. Regardless, revenue has managed to lift by a handy 25% 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.

Comparing the recent medium-term revenue trends against the industry's one-year growth forecast of 25% shows it's noticeably less attractive.

With this in mind, we find it worrying that Linktel Technologies' P/S exceeds that of its industry peers. 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 Linktel Technologies' P/S?

Linktel Technologies' P/S has grown nicely over the last month thanks to a handy boost in the share price. We'd say the price-to-sales ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

Our examination of Linktel Technologies revealed its poor three-year revenue trends aren't detracting from the P/S as much as we though, given they look worse than current industry expectations. 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 the recent medium-term conditions improve markedly, it's very challenging to accept these the share price as being reasonable.

And what about other risks? Every company has them, and we've spotted 3 warning signs for Linktel Technologies (of which 1 is a bit unpleasant!) you should know about.

If strong companies turning a profit tickle your fancy, then you'll want to check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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