Baby and maternal product purchases have been listed as a top priority by the city government, prioritized for ordering and delivery during the lockdown, Shanghai's Vice Mayor Chen Tong said on Thursday.More than 3,500 cans of infant formula have been sold at local supermarkets in the past 10 days, the supply of which remains sufficient with another 133,200 cans available, Chen said at the city's daily press briefing on COVID-19.The government has helped solve logistic and delivery problems for suppliers such as supermarket chains Lianhua, Metro and Carrefour.