Cimbar Performance Minerals Polyfill 405 alumina trihydrate product is specially produced for applications that require highly controlled particle size distribution and improved physical properties. Compounders using Polyfill 405 are able to achieve high loading levels with superior physical properties. The increased surface area allows molders to achieve high surface properties, while particle distribution control allows maximum loadings levels. Polyfill 405 offers excellent flame retardancy and smoke suppression. Polyfill/PolyJet alumina trihydrate products are tightly controlled by Cimbar Performance Minerals ISO 9001:2015 quality program.