Investor optimism fuels high P/S ratio for Suzhou QingYue Optoelectronics, disregarding limited recent growth. The current share price might not be justified if market conditions don't improve significantly.

Investors are seemingly prepared to discount Suzhou QingYue Optoelectronics's limited growth. The risk of a future disappointment is real if P/S ratios align with recent growth rates. The danger of a share price drop is amplified due to weak revenue growth.