To this end, we put in place an advanced quality assurance system and value-added service program.

为此，我们建立了一个先进的质量保证体系和增值服务计划。

youdao

To this end, we put in place an advanced quality assurance system and value-added service program.

为此，我们建立了一个先进的质量保证体系和增值服务计划。

youdao