The proposal shall be prepared at the cost of the Contractor and shall include the items listed in Sub-Clause 13.3 [Variation Procedure].

承包商应自费编制此类建议书，并将其包括在第13.3款【变更程序】所列的条目中。

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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.

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。

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NB: This clause could be considered to be a variation to the CIETAC Rules.

注：本条内容可能被认定为对贸仲会仲裁规则的变更。

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