Responsibility and sustainability 

Quality is an important parameter for TRESU Group. All working processes are audited according to ISO:9001:2015, ISO:14001:2004 and DNV, ensuring constant high product quality. Our products can also be supplied in compliance with UL 508A, GS and CSA approvals – all to guarantee TRESU’s validity worldwide. We also hold the Umbrella certificate, OEE.

TRESU Group is capable of gathering relevant documentation according to the customer’s own quality and environmental standards. 

Furthermore, we continue to focus on incorporating environmental concerns in the manufacturing process of our products to the benefit of our employees, the environment and our descendants. TRESU Group’s environmental policy and goals, which is an integral part of our company, is constantly reviewed and improved. TRESU has obtained a diploma for an extraordinary environmental effort from the organisation Green Network, and is also  certified according to Norsk Veritas.


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