hétóng / zhōng / yǐjīng / zǎimíng / yǐfāng / bìxū / zài / yuèmò / qián / wánchéng / shèbèi / ānzhuāng

合同中已经载明，乙方必须在月底前完成设备安装。

The contract explicitly states that Party B must complete the equipment installation by the end of the month.