CER TIFICATE

Certificate registration No. 70 900 5503

Audit report No. 4372 6858

Certificate valid from 2020-04-06 to 2023-04-05

scope:

PAGE 1 OF 1. This certification was conducted in accordance with the TÜV PROFiCERT-plus auditing and certification procedures and is subject to

regular surveillance audits. The current validity is verifiable at www.proficert.com. Original certificates contain a glued hologram.TÜV Technische Überwachung Hessen GmbH, Robert-Bosch-Straße 16, D-64293 Darmstadt, Germany, Phone +49 6151/600331 Rev-GB-2001

Darmstadt, 2020-10-17 Certification body of TÜV Hessen

– Head of Certification body –

ISO/TS 29001:2010 (Petroleum, petrochemical and natural gas industries - Sector-specific quality management systems)

for the management system according to

Research and development, production and sales of explosion safety systems, grounding equipment, pressure relief devices

and rupture discs

Gallbergweg 21, 59929 Brilon, GermanyZur Heide 35, 59929 Brilon, Germany