本合同的任何补充、变更和修改应当以书面方式进行，于双方授权代表共同签字之日起生效。
Any additions, changes and modifications should be carried out in writing to this contract, authorized representatives of both parties effect the date of signature.
工程变更也就是合同变更，是指对合同中的工作内容作出修改，或者追加或取消某一项工作。
The engineering modification is also the contract modification, which means that some modification, superaddition or canceling is done in content of contract.
工程变更是指由于设计文件或技术规范修改而引起的合同变更，它对工程造价管理工作有较大的影响。
The change of project refers the changes of contract caused by the modification of design document or technical specifications, which has great impact on the work of project cost management.
根据第17条规定，合同的任何变更或修改，必须以双方签订的修改文本为准。
Subject to Clause 17, no variation in or modification of the terms to the Contract shall be made except by written amendment signed by the parties.
注：股权变更后各股东订立的企业修改合同已包括有关股权变更协议内容的，免交本项要求的股东声明。
Note: the required claim of the shareholder can be exempted if the Enterprise Modify Contract signed by the shareholders after the change of shareholder's ownership has included this change.
企业董事长签署的关于因股东名称变更而修改章程（合同）的申请报告原件1份（打印，申请企业盖章）；
One original of the application of constitution (contact) amendment because of shareholder change signed by the chairman of the board (printed, sealed by the applicant);
企业董事长签署的关于因股东名称变更而修改章程（合同）的申请报告原件1份（打印，申请企业盖章）；
One original of the application of constitution (contact) amendment because of shareholder change signed by the chairman of the board (printed, sealed by the applicant);
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