SOMERVILLE, Mass., Nov. 8, 2019 /PRNewswire/ — Greentown Labs, the largest cleantech startup incubator in North America, today announced Sumitomo Chemical America as its newest Terawatt Partner. Sumitomo Chemical America, Sumitomo Chemical’s regional headquarters for the Americas, is a member of a group of more than 160 companies operating around the world in business sectors as diverse as petrochemicals and plastics, energy and functional materials, IT-related chemicals, health and crop sciences, and pharmaceuticals. The partnership will embed Sumitomo Chemical America within the Greentown Labs’ startup community and the Greater Boston cleantech ecosystem.