... primary micro-particle from 5 fumed silica LM-380 White carbon blackFumed Silica 1. Characteristic: It is a white ... coating, electron and electric, aerospace, medicine and medical material, resin processing, printing ink, pesticide and other industries.A-150: used ... A-300: used widely in resin thickener, thickness agent for synthetic lubricating ester, resin thixotropic agent for electronic component.A ...