Provided are a joined product in which a polypropylene resin and an addition-curing silicone rubber are firmly joined together, and a method for producing the same. A joined product in which a dry-treated polypropylene resin and an addition-curing silicone rubber are joined by two primer compositions, wherein the dry-treated polypropylene resin/first primer layer/second primer layer/addition-curing silicone rubber are joined in this order. First primer layer: First primer composition containing a silane compound in which a 3-aminopropyl group is bonded to a silicon atom and a silane compound having one or more epoxy group-containing organic groups in one molecule; second primer layer: An organopolysiloxane having two or more alkenyl groups bonded to a silicon atom in one molecule; A platinum group metal catalyst

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