Twenty-eight inspection warehouses for imported frozen food will be added in Guangzhou, Guangdong province, to expand checks of imported frozen food starting on Wednesday, a statement released by the city's headquarters of COVID-19 prevention and control said on Tuesday.

"All the imported frozen food coming to the city will inspected in the designated centralized supervision warehouses before it is allowed to be sold in local supermarkets, shopping malls or meat and vegetable bazaars," the statement said.

Government departments in the city will implement unified, centralized, scientific and accurate inspections of all the imported frozen food flowing into Guangzhou in the centralized supervision warehouses. This will ensure that a closed-loop of supervision on the storage, transport, production, processing, sales and catering services involving imported frozen food, the statement said.

The process will help build a regular coronavirus prevention and control network in the city, which annually imports large amounts of frozen food, it said.

"The move aims to prevent coronavirus from spreading in the southern metropolis from cold-chain industries."

The centralized supervision warehouses are mainly located in the city's Liwan, Baiyun, Panyu, Huangpu and Nansha districts, the statement said.

Meanwhile government departments have been urged to expand and enhance environmental cleaning and disinfection of centralized supervision warehouses on a regular basis at least daily, the statement added.