Unison Engineering Co. Ltd,

Our strategic partner for Product is Unison Engineering Co. Ltd, established since 1984 in South Korea and are a specialist manufacturer of anti-noise, vibration and seismic products. They hold ISO 9001 Quality and ISO 14001 Environmental Management System Certification with several patents to their credit.

Petra Seismic Design LLC

Our strategic partner for Design is Petra Seismic Design LLC, established since 1984 in Texas, USA and are a specialist full-service seismic, wind and vibration isolation consultancy and registered professional Engineers.


UNISON PETRA is a member of TANSEEQ Holding LLC group of companies which was established in 2000 in Dubai, UAE, comprised of 19 companies each specializing in select discipline. Together, we employ over 5000 trained personnel, including 800 engineers, architects, and technical professionals.