Trilogy Circuits Zentech is an Electronic Manufacturing Services company & a certified small business. Our focus is on the defense, aerospace, and medical industries, manufacturing highly complex, mission critical el Zentech is an Electronic Manufacturing Services company & a certified small business. Our focus is on the defense, aerospace, and medical industries, manufacturing highly complex, mission critical electronic and electromechanical assemblies. We are located in Baltimore, MD, Richardson, TX, and Bloomington, IL We are highly certified: AS9100, ITAR, and ISO 13485. Zentech is also certified IPC 610 for Class 3 mission critical electronics, is IPC 1791 certified & IPC J-STD-001 certified.