Boa Technology, the company known for its unique closure system, has broken ground in the Denver area for the construction of a new 140,000-square-foot office building. Targeting LEED Silver certification, it will have one of the largest private green roofs in the city. The building will house the Boa Fit Lab and a prototyping facility that it had already set up last year. The company plans to add to its global staff, which currently consists of 201 people at offices in the U.S., Austria, Japan, China, Hong Kong and South Korea.