ZTO Express (Cayman) Inc. provided production guidance for the year 2021. The company makes no changes to its previously stated annual volume guidance. Based on the current market conditions and current operations, the company's parcel volume for 2021 is expected to be in the range of 22.95 billion to 23.80 billion, representing a 35% to 40% increase year over year. Above estimates represent management's current and preliminary view, which are subject to change.