The sales of China's centrally-administered grain and oil in 2020 more than doubled from the same period a year earlier amid the country's efforts to ensure grain security, according to the China Grain Reserves Group (CGRG).

A total of 105 million tonnes of policy grain was sold last year, reaching the second-highest level on record, the CGRG said.

Policy grain refers to grain from central reserves and will be released to the market to increase supply when it is necessary.

Apart from guaranteeing market supply, the CGRG overcame the impact of the COVID-19 epidemic and adopted measures including extending the purchasing period to protect the rights and interests of farmers, the group added.

Despite the disruption of the epidemic, China saw its 17th consecutive bumper year in 2020, with grain output reaching nearly 670 billion kg, up 0.9 percent year on year.