The company's consistent decline in revenue and share price over the past five years suggests unresolved challenges. The market's focus on top-line growth due to low profit may deter risk-averse investors.

Dongguan Kingsun Optoelectronic's high P/S ratio is worrying due to its recent poor growth. Investors hope for a business turnaround, but continued revenue trends could hurt the share price. The company's future doesn't look bright without medium-term improvements.