Amendments modifying or extending the Contract shall be binding upon both parties only if in writing and signed by a duly authorized officer or representative of each party.
对合同所作的修改或扩充，只有采取书面形式并经双方正式授权的主管人员或代表签署后，方能对双方有约束力。
The signatory shall be a Responsible Officer of the Exchange Participant or a person duly authorized by the board of the Exchange Participant.
必须经由交易所参与者之负责人员或经由董事会授权之人士签署。
The signatory shall be a Responsible Officer of the Exchange Participant or a person duly authorized by the board of the Exchange Participant.
必须经由交易所参与者之负责人员或经由董事会授权之人士签署。
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