Shenzhen Sunmoon Microelectronics' low P/S ratio is due to poor revenue performance and expected limited growth. Unless conditions improve, the low P/S ratio will continue to hinder the share price.

Investors are paying for exposure to the stock despite limited growth rates. However, if medium-term revenue trends persist, the share price may drop. The company's weak three-year revenue trends and slower industry growth indicate potential risk for shareholders.