In dry chemical extinguishing agent like ABC dry chemical (ABC Class), BC Dry Chemical, if they are caking, the function of ABC Multipurpose Dry Chemical Fire Extinguishers will be impacted. So the anti-caking material are indispensable. It has a scaly structure and elastic fillers, such as mica, graphite, vermiculite, etc. Mica is the most commonly used in powders, with a fineness of about 250 mesh. Mica has excellent electrical insulation properties. After adding mica, it gives fire extinguishing agents good electrical insulation properties and can significantly improve the anti-vibration performance of dry powder.