Global Communication Semiconductors, LLC agreed to acquire D-Tech Optoelectronics, Inc., U.S.A. Posted on 07/13/2017 by Ron Klammer Posted in Mergers & Acquisitions Tagged Hardware & Systems D-Tech Optoelectronics, Inc., U.S.A designs, manufactures, and markets positive/intrinsic/negative components and avalanche photo diodes for telecommunication systems and data communication networks.