The declining ROCE at Inner Mongolia Dazhong Mining is concerning, indicating potential loss of competitive advantage or market share. The reduction in liabilities suggests less risk but also less efficiency in generating ROCE. Consider other investment options if trends don't improve.

Declining ROCE and increased capital use for smaller returns show the company may be losing ground, despite efforts to reinvest for growth. Alongside stock price tumble, these trends compel cautious investment, suggesting other opportunities might be more profitable.