Jinan High-tech Development's high P/S ratio and declining revenue may be worrisome despite share price increase. If business prospects don't improve, shareholders may face disappointment. Current value may deter prospective investors if recent medium-term revenue trends persist.

Despite profitability in recent years, the company's share price hasn't mirrored this positive shift. Weak long-term performance and less robust top-line growth than expected may have undermined market confidence.

Despite declining revenue, the company's high P/S ratio may suggest investor optimism. However, continued revenue decline could disappoint shareholders and pose risks to investors due to the high P/S ratio amidst negative growth rates.

Jinan High-tech Development's impressive ROE and reinvestment of all its profits are driving its earnings growth. Should this trend continue, it could have a positive impact on its share price.