JD.com has been heavily criticised by e-commerce rival Suning after telling merchants not to use the latter’s courier delivery subsidiary and to use its five preferred partners instead. On Monday, the Chinese e-commerce group recommended to merchants using its marketplaces to work with five couriers from the end of this month, various media reported. These are the company’s own subsidiary JD Express along with private companies SF Express, ZTO Express, Yunda Express and STO Express.