Profile: Circle-Prosco, Inc. is a manufacturer of chemicals for metal finishing industry. We are certified to ISO/TS-16949 standards. Our brands include Alcoat™. Our products include lubricants, aqueous cleaners, rust preventatives, aluminum and steel pretreatment. Our aqueous cleaners are used in substrates such as steel, aluminum, copper and alloys. Our lubricants specialize in automotive & residential heat exchanger industries. Our services include formulation, testing and trials.