2019 INTERTEK Certification
From Intertek website:
Delta has been verified to perform one or more of the following services on structural and proximity garment elements and technical rescue garment elements:
Verification includes a review of the quality management system, procedures and documentation, and random unannounced visits to ensure continued compliance.
The basic standard used to verify service providers and organizations in this category is ANSI/NFPA 1851 (2014), "Selection, Care, and Maintenance of Protective Ensembles for Structural Fire Fighting and Proximity Fire Fighting," and/or ANSI/NFPA 1855 (2013), "Selection, Care, and Maintenance of Protective Ensembles for Technical Rescue Incidents."