Maleic anhydride modified ABS is used to improve the compatibility between nylon products (PA6, PA66, etc.) and ABS alloy, and to give the alloy products excellent processibility and mechanical properties. It can also be used for PBT/ABS, PC/ABS to improve the compatibility of the compounds. It works as interface compatibilizer in glass fiber reinforced ABS and filled ABS system to improve the compatibility and mechanical properties.