仲裁申请人××市五金矿产进出口公司与被申请人美国G公司签订了十份售货合同后,就合同项下付款事宜签订了《协议书》。其后,双方未能执行该付款《协议书》,申请人于是提请仲裁解决,要求被申请人偿付货款及相关损失。 被申请人在答辩中对《协议书》的效力予以否认,原因如下:1、协议书是被申请人与××市 The arbitration applicant signed the “Agreement Letter” on the payment items under the contract after the company signed the ten sales contracts with the respondent United States G Corporation. After that, both parties failed to implement the “Agreement” on the payment, and the claimant then submitted an arbitration settlement to the claimant, requesting the respondent to pay the purchase price and related losses. The respondent denied the validity of the “Agreement” in his reply. The reasons are as follows: 1. The agreement is the respondent and XXXX