: You should know [speak 甲方] (jiǎ fāng) for Party A, [speak 乙方] (yǐ fāng) for Party B, [speak 合同] (hé tóng) for contract, [speak 协议] (xié yì) for agreement, and [speak 签字盖章] (qiān zì gài zhāng) for sign and seal.