We’re a growth firm for a diverse portfolio of businesses, with strong values and deep entrepreneurial roots. With almost 100 years in business, it’s important for us to invest in our people, our businesses, and our communities. If you’re interested in connecting with us, call or email at the links below. We’re headquartered in Grand Haven, Michigan, where JSJ first started as a brass foundry in 1919. Since then, we’ve expanded to include JSJ China in Tianjin.