 SHANGHAI, April 26, 2021 PRNewswire -- ZTO Express Cayman Inc. NYSE: ZTO and HKEX: 2057 ZTO or the Company, a leading and fast-growing express delivery company in China, today announced that it will release its unaudited financial results for the first quarter ended March 31, 2021, after the U.S. markets closes on May 19, 2021. ZTOs management team will host an earnings conference call at 8:30 P.M. 