CARTRIDGE AND LIQUID SUPPLY SYSTEM

原文（中国語）

A cartridge includes a liquid accommodating portion configured to accommodate liquid, a supply port member having a supply port that communicates with the liquid accommodating portion and supplies the liquid to an outside of the liquid accommodating portion, a sealing member provided on an inner peripheral surface of the supply port, a case member configured to accommodate the supply port member, and a cap configured to cover a portion of an opening surface of the supply port from the outside of the supply port. The cap is welded to at least one member of the supply port member, the sealing member, and the case member, and a welded portion, which is a portion where the cap and the at least one member are welded, seals between the cap and the at least one member.