Founded in Worcester, Pennsylvania, in 1946, Palmer International makes cashew-nutshell-liquid derivatives, including friction particles for automotive braking and specialty resins and polyols. The company is the world’s oldest cashew derivative manufacturer, operating an integrated, ISO 9001-certified facility in Skippack and supporting customers through distribution arms in Europe and Asia. Its history includes developing the first continuous CNSL distillation plant and a long-running focus on renewable cashew chemistry.
Cardolite CorporationFor more than 40 years, privately held Cardolite Corporation has built its identity around cashew nutshell liquid, developing the original commercial applications of this renewable byproduct. About 350 employees support manufacturing in India and China, research facilities in four countries, and customer service reaching more than 75 countries. The company develops specialty chemical materials for industrial formulators, with particular depth in epoxy systems and brake materials.BRISTOL, PA
Muscle Products CorpFrom a two-stall garage in Butler, Pennsylvania, Muscle Products Corp. has manufactured specialty lubricants and fuel additives since 1985, anchored by its Original Metal Treatment MT-10® formulation. The company is now based in Jackson Center and serves industrial users and consumers with products designed to reduce friction, heat and wear in equipment. Sharon Murphy-Dittrich purchased the business in 2001 to keep it in the hands of its employees and distributors, and Muscle’s products are proudly made in the USA under ISO 9001:2015 registration.JACKSON CENTER, PA
SonnebornFounded in 1904, Sonneborn manufactures high-purity specialty hydrocarbons and related ingredients for formulations used around the world. The company became the first U.S. white oil manufacturer in 1916 and now operates production facilities in Petrolia, Pennsylvania, and Amsterdam, supporting both standard and customized solutions. Sonneborn’s Petrolia facility has held ISO 9001 certification since 1992 and achieved ISO 14001 certification in 2024.PETROLIA, PA