“It’s an unusual commitment from them. It speaks to the strength of the business and the strength of the opportunity.” Unusual isn’t a common word you’ll hear from a company discussing its newest strategic investor but that is the case for Keychain, the manufacturing marketplace business led by Irish-born entrepreneur Oisín Hanrahan. Hershey, the 130-year-old American confectionary giant, made a strategic investment of $2.5 million in Keychain, whose platform connects consumer packaged goods (CPG) companies with manufacturers, earlier this month. It’s not a typical investment for Hershey. It is one of the old guard in CPG and would have its…