BEIJING (AFX-ASIA) – About 40 pct of the bondholders of Sinopec Maoming Oil Refinery & Chemical Co Ltd (SZA 125302) may take legal action over the withdrawal of a planned A-share listing, the Shanghai Securities News reported, citing Yan Yiming, the bondholders’ lawyer. Sinopec Maoming, a unit of Hong Kong-listed China Petroleum & Chemical Corp…