The market suspects the company's revenue may not meet industry standards soon, causing a lower P/S. Some shareholders, more bearish recently, are accepting lower selling prices. Unseen threats to revenue might be hindering the P/S ratio from reflecting the company's performance.

Despite the P/S ratio of China Dredging Environment Protection Holdings being low due to future growth expectations lagging, its medium-term revenue growth matches industry projections creating confusion among observers, suggesting potential risks that could decrease share price.