Cimbar Performance Minerals Polyfill 407 alumina trihydrate product is specially produced for BMC/SMC applications. Thru particle size distribution control, compounders are able to achieve high loading levels with superior physical properties. The top size is controlled which increases process and quality control. The increased surface area allows molders to achieve high surface qualities, while particle distribution control allows maximum loadings levels. Polyfill 407 offers excellent flame retardancy and smoke suppression. Polyfill/PolyJet alumina trihydrate products are tightly controlled by Cimbar Performance Minerals ISO 9001:2015 quality program.