Anhui Conch Cement's non-operating revenue spike may mislead investors about the company's true earnings power. Also, there are 2 warning signs investors should note.

China Resources Building Materials Technology Holdings' ROCE trend is concerning. Despite reinvestment efforts, the company is losing market share as sales stagnate. If trends don't improve, considering other investments might be wise.

BBMG's significant balance sheet liabilities and negative earnings before interest and tax (EBIT) make it a risky investment. The company's low liquid assets relative to liabilities and its loss of CN¥1.1b in the last year further increase this risk.