进行书面确认，质量要求等变更时也必须书面确认。的翻译：Confirmed in writing, as well as their quality change must also be confirmed in writing. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

A written confirmation, quality requirements and other changes must also be confirmed in writing.

Confirmed in writing, as well as their quality change must also be confirmed in writing.

正在翻译，请等待...

A written confirmation that such change, quality requirements must be confirmed in writing.

Confirmed in writing, as well as their quality change must also be confirmed in writing.