A.P. Nonweiler
Chemical ManufacturingWisconsin, United States11-50 Employees
AP Nonweiler operates in the chemical manufacturing sector as a specialty custom manufacturing partner for B2B clients with demanding formulations. It positions itself as an embedded engineering team, guiding challenging chemistries from formulation through scalable, precision production, backed by long-standing technical authority and strong safety practices. Unlike traditional toll manufacturers that primarily process existing formulas, AP Nonweiler focuses on transforming formulation challenges into engineered production solutions. The company leverages nearly a century of experience to navigate technical and regulatory considerations for industrial-scale projects. Based in Oshkosh, Wisconsin, AP Nonweiler serves industrial partners and chemistry innovators pursuing high-stakes production and compliance. In October 2025, AP Nonweiler announced the acquisition of Res-Tek Inc., a move aimed at advancing coatings innovation.