... are able to supply different types of direct roving used for filling automobile silencers, filame We ... different types of direct roving used for filling automobile silencers, filament wind, pultrusion or spray up purposes. ... We also can supply multi-ends roving used for filament wind, pultrusion, spray up, SMC or GRC.Specifications ... Coupling agent: silane Sell E-Glass Fiberglass Direct Roving