WORCESTER, Mass., Nov. 3, 2025 /PRNewswire/ -- The Hanover Insurance Group, Inc. (NYSE: THG) today announced the launch of Hanover Specialty Industrial Property (HSIP) Advantage, a new admitted property product designed to modernize insurance coverage for small to mid-sized businesses that manufacture, blend, distribute, warehouse or transport high-hazard products and materials. Available for new business effective Oct. 1, 2025, and renewal business Feb. 1, 2026, HSIP Advantage offers a specialized, modula ...