{TAIL ~ The method} includes the steps of: providing fibers of a desired length; treating {HEAD ~ the fibers} with a treating liquid made up of a nitrile rubber modified epoxy resin and an alkylphenol•formaldehyde resin; and dispersing the treated fibers in rubber 
{ TAIL ~ The method } includes the steps of : providing fibers of a desired length ; treating { HEAD ~ the fibers } with a treating liquid made up of a nitrile rubber modified epoxy resin and an alkylphenol•formaldehyde resin ; and dispersing the treated fibers in rubber
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