From new digital food store channels to expanded nucleic acid testing capacity, multifunction thermometers and artificial intelligence, listed high-tech companies are responding rapidly to the fight against the resurgence of the pandemic in Shanghai.Hong Kong-listed Weimob, which helps retailers and shoppers sell products online, opened several online stores for local vegetable and meat wholesalers to sell directly to residents citywide, mainly in Changning, Putuo and Xuhui districts.With Weimob's help, food wholesalers can open online stores within 24 hours with product display, payment systems, client services and delivery interfaces.