Charger Investment Partners-backed Apex Space & Defense Systems, an innovative, lightweight, and durable material manufacturing solution for the space, defense, and mission-critical infrastructure sectors, completed the acquisition of Unitech Composites, an aerospace and defense company. Financial terms were not disclosed. “We are thrilled to announce the acquisition of Unitech and the launch of the APEX brand,” Aaron Perlmutter, completed the acquisition of Unitech Composites. Co-Founder and Partner.