GMI Onshore Electronic Manufacturing - br General Microcircuits’ home is just north of Charlotte, North Carolina, where we operate our newly-expanded 75,000 square foot facility. Our domestic capabilities include high-speed electronic circuit assembly, finished hand assembly, testing, coating and packaging. We are certified for ISO9001 and ISO14001, have FDA approval for manufacturing, and produce FCC-, CE-, UL- and TUV-certified programs.