# FDA Warning Letter: King Systems Corp. dba Ambu, Inc.
> 2023-08-22 · Center for Devices and Radiological Health · `3adf052b8e5535ef`
## Letter
- **Company:** King Systems Corp. dba Ambu, Inc.
- **Posted Date:** 2023-08-22
- **Letter Issue Date:** 2023-08-16
- **Issuing Office:** Center for Devices and Radiological Health
## Subject
CGMP/QSR/Medical Devices/PMA/Adulterated/Misbranded
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*Source: [FDA Warning Letters](https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/compliance-actions-and-activities/warning-letters) · AI Analytics · CC0 1.0*