Koch Industries Inc. has completed its purchase of Guardian Industries Corp. upon receiving all regulatory approvals of the transaction, the company announced today.

Koch initially acquired a 44.5 percent minority interest in Guardian in 2012 and purchased the remaining shares last November. Terms of the deal were not disclosed.

“Guardian began in 1932 as a small windshield company in Detroit and has since become an established leader, proudly serving a global customer base in multiple industries,” Guardian president and CEO Ron Vaupel said in a statement. “The combination of Guardian’s expertise and Koch’s existing capabilities and infrastructure provides a tremendous opportunity for all of us to create more value for our customers and the communities in which we operate.”

Koch CEO Charles Koch added that although the company has worked with Guardian since 2012, “our progress together has scratched the surface.”

Guardian companies have nearly 150 locations in more than 25 countries and bring Koch’s employment total to more than 120,000 worldwide.