The Addyston site is located on the Ohio River in a western suburb of Cincinnati. It was initially developed in the 1880's by Matthew Addy as the Addyston Pipe Works. The site has been a polymer producer dating back to 1953 with Monsanto. INEOS acquired the site in 2007 and in 2015, INEOS Styrolution became the one face to the market for all Addyston produced products. The Addyston site is within in a one-day trip from 54% of US manufacurers. The site is accessible by barge, rail, and trucking.
The Addyston site manufactures MASS ABS and Suspension SAN products that are used in a wide variety of applications and industries, including Automotive, Electronics, Household, Healthcare, and Construction. Final applications include housings for electronic and household devices and toys. The site is ISO 9001:2015 certified for quality management. The site holds an ISO/IEC 17025:2017 accreditation for the competence to carry out tests and/or calibrations through A2LA, certificate number 2072.01. As an OSHA Voluntary Protection Program site, Addyston maintains the highest standards for safety and health.