The objective is to provide a surface treatment liquid used to ensure adhesion between two substances through interfacial molecular bonding, and to provide a composition liquid capable of forming a bond with excellent
moisture resistance, or a bond with excellent
moisture and
heat resistance, and to provide a method for manufacturing
metal-coated resins or resin laminates by plating or bonding using the composition liquid. [Solution] The composition liquid comprises a
polymer, a thermopolymerizable compound, and an
azide compound, wherein the
polymer comprises a first repeating unit having a primary or secondary amino group, a second repeating unit having an allyl group, and a third repeating unit having a hydrophobic functional group other than an allyl group. Preferably, the
polymer, the thermopolymerizable compound, and the
azide compound do not contain ester bonds, and preferably, the polymer and the
azide compound do not contain
amide bonds. The composition liquid may also contain an organosulfur compound. The polymer may also comprise a polyether block.