Caterpillar has awarded the Bridgestone Americas agricultural tyre plant in Des Moines, USA the highest level in the Caterpillar Supplier Quality Excellence Process (SQEP) certification – Platinum Level for a second consecutive year. These back-to-back platinum awards follow three years of Gold Level SQEP certifications. Bridgestone Americas says receiving the latest Platinum Level certification “represents a significant milestone” for Bridgestone and the Firestone agricultural tyre team.