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Mark was engaged as an expert in litigation and has been great to work with - very responsive, practical and tells it like it is. I would recommend him to others.

- Duke Holzman Photiadis & Gresens LLP

Fusion Systems Engineering, DPC is a building systems engineering firm, specializing in mechanical, electrical, plumbing, and fire protection design and commissioning. Our staff has provided design, consulting, and commissioning services throughout New York, New Jersey, and into New England.