 NEW YORK--BUSINESS WIRE--SG Blocks, Inc. NASDAQ: SGBX SG Blocks or the Company, a leading designer, innovator and fabricator of container-based structures, announced today that in furtherance of its September 2020 acquisition of ECHO DCL in Durant, Oklahoma, a new 10,300 square foot building extension will be used to greatly increase the Companys capacity for container modifications, reinforcements, and the construction of light gauge steel purpose-driven modules. This additional squ 