BRIEF-PetroChina's controlling shareholder gets regulatory approval to issue exchangeable bonds
Nov 21 (Reuters) - PetroChina Co Ltd
* Says controlling shareholder gets securities regulator, state assets regulator's approval to issue exchangeable bonds which can be exchanged to co's A-shares
Source text in Chinese: http://bit.ly/2znsQVM
Further company coverage: (Reporting by Hong Kong newsroom)