The JSJ Corporation is a privately held collection of growth companies that provide industry-leading durable goods and services globally.



Based in Grand Haven, Michigan, and established in 1919, JSJ reflects the values and entrepreneurial spirit of its founding families -- the Jacobsons, the Johnsons and the Sherwoods. The organization is led today by a blend of third-generation family members and professional managers.


The corporation’s six businesses include Dake, GHSP, Hudson Technologies, izzy+, McLoone and Sparks Belting, and JSJ provides each a robust platform of financial and technological support services, strategic-planning tools, business processes, along with talent acquisition and development. JSJ invests in its people, its businesses and its communities.

JSJ businesses provide products and services to global customers ranging in scale from small startups to the largest multinational corporations.  No matter their size or location, customers may count on extraordinary value and a true, long-term business partner when dealing with any JSJ company.

Value Proposition

JSJ is focused on delivering what our customers need, while creating a true value proposition for our economic partners.