Sugrema is managed by Erwin Johnn, Moedio Tirtotaroeno & Dietmar Laske


Erwin Johnn

Erwin has > 25 years experience in health & safety. He is hands on and has very good training and interim management skills. Erwin is OHSAS 18001 Lead Auditor.


Moedio Tirtotaroeno

Moedio has > 20 years experience in environment & quality. He is an experienced consultant, ISO 14001 Lead Auditor and has developed Emergency release and action plans for businesses and the community. Moedio plays an important role in several boards for environment.


Dietmar Laske

Dietmar has > 20 years experience in HSEQ & Sustainability. He has a degree in Safety and high experience in Sustainability data verification. Training is one of his key skills. Dietmar is an approved Lead Auditor (ISO 9001, 14001 and OHSAS 18001) and has indept knowledge of and experience in machine safety, process safety (ATEX, Hazop, etc.) and environmental aspects.

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Ziff Johnn

Operations manager

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