The declining trend in Shenzhen Changhong Technology's ROCE, despite the company's reinvestment in its own business, is a cause for concern. Unless these underlying trends turn more positive, the high returns experienced by shareholders in the past may not continue.

Despite lower short-term returns, Shenzhen Changhong Technology achieves good long-term returns. Favorable market sentiment is due to its strong EPS growth and optimistic P/E ratio, but a recent price dip may be a buying opportunity.