AJ MEDICAL MANUFACTURING. FDA REGISTERED, ISO is perceived as one of Atrion's biggest rivals. AJ MEDICAL MANUFACTURING. FDA REGISTERED, ISO was founded in 2015, and is headquartered in houston, Texas. Like Atrion, AJ MEDICAL MANUFACTURING. FDA REGISTERED, ISO also competes in the Health Care Equipment space. AJ MEDICAL MANUFACTURING. FDA REGISTERED, ISO generates $ less revenue vs. Atrion.