SG Blocks, Inc., a leader in modular container-based structures and innovator in portable, clinical-grade laboratories for high-capacity testing, and OSANG Healthcare Co., Ltd. (“OSANG” or "OHC"), a South Korea based global manufacturer of medical-grade diagnostic tests and equipment, announced today a Managed Supply Agreement building on their distributorship agreement executed earlier this year, to distribute OHC’s "GeneFinder® COVID-19 Plus RealAmp Kit" test in the United States and Canada.