AMCOR is an industry leader in supplying bulk smelting fluxes, specialty fluxes, refining agents and foundry products to the Aluminum Industry. AMCOR has five manufacturing and shipping locations in North America; those locations include, Lorain, Ohio, Medina, Ohio, Chicago, Illinois, Mt. Vernon, Indiana and Florence, Alabama. They have been a proud supplier to the Aluminum Industry for over 40 years and it is AMCOR's mission to continue to improve their products and services with integrity and in a socially and environmentally responsible manner. AMCOR is certified as a Women Business Enterprise.

AMCOR was established in 1967 as a division of Rossborough Supply Company in Cleveland, Ohio. Rossborough Supply was founded in 1942 by chemist Alexander Rossborough to develop, manufacture and supply specially formulated chemical compounds called fluxes to aluminum foundries. AMCOR has grown considerably over the years and currently manufactures products in four locations; Medina, Ohio; Lorain, Ohio; Chicago, Illinois; and Florence, Alabama.AMCOR’s philosophy is to maintain diligent cost controls while providing consistent, quality products. Additionally, AMCOR’s focus is to develop products for an increasingly wide range of melting and casting industries. The industries served include primary and secondary aluminum processing, rolled products, dross processing, extrusion and billet, aluminum, magnesium and zinc die casting and gray iron and steel foundries.