Modifications, additions and cancellations of Service Contracts require the written form. Previous Service Contracts become invalid with the conclusion of a Service Contract with the same contents.

服务合同的修改、补充和解约均应采用书面形式。当签订相同内容的新服务合同时，之前的服务合同应失效。

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Modifications, additions and cancellations of Service Contracts require the written form. Previous Service Contracts become invalid with the conclusion of a Service Contract with the same contents.

服务合同的修改、补充和解约均应采用书面形式。当签订相同内容的新服务合同时，之前的服务合同应失效。

youdao