The market's belief in the company's future underperformance due to recent lacklustre revenue may hurt the P/S. The low P/S ratio could be due to revenue trends not meeting industry expectations. Investors may doubt the potential for revenue improvement to justify a higher P/S ratio.

Limited growth rates for Ningbo Donly Co.,Ltd may lead to a drop in stock price. Revenue trends falling below industry expectations might deter investors. Shares may continue to stagnate without improved medium-term conditions.