Aluminium Hydroxide fire retardant additives from Huber – Martinswerk are halogen – free, environmentally friendly products that can be used in a wide range of polymeric materials. The Fine Precipitated and Ground range of ATH is developed to meet the most stringent requirements in the plastics industry. A variety of surface coatings on these precipitated and ground grades are available, offering improved processing and mechanical properties when incorporated into resins.