Royal Bird's Nest products are made from Top-quality Bird's Nest harvested under leading manufacturing technology and the most stringent quality control system.

御燕廷即食燕窝系列产品采用精选上等燕窝，以先进的生产工艺及严格的质量管理体系制造。

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They were also under stringent quality control, well managed and well coordinated.

品牌有妥善的管理及统筹，而其使用有严格的监管。

youdao

In return for the bailout, Bangkok must meet certain stringent conditions -- such as reducing the current-account deficit and keeping inflation under control -- through a tough austerity program.

CNN: Getting Down to Work