On March 22, PetroChina Liaohe Oilfield celebrated the 54th anniversary of oilfield development and construction. The daily peak-shaving capacity of the L Xiaohe gas storage group exceeded 41 million cubic meters, making it the largest in the country.

To be the "backbone" of ensuring energy supply, the resource base must be strong, the company says. The majority of scientific researchers have focused on the main direction of research, continued innovation and technological innovation, it says.