Investors' belief in the company's poor revenue performance and potential major risk factors could be causing the low P/S ratio. The market might be anticipating revenue instability, normally a boost to share price.

Guangdong Yuehai Feeds Group Ltd's declining ROCE trends are troubling indicators for its future. Despite reinvesting for growth, the company's sales have not significantly risen. Its stock has provided merely a 4.3% return last year, hinting shareholders' awareness of these disappointing trends.