A polyimide surface is pretreated in {HEAD ~ preparation} for {TAIL ~ an adhesion promotion treatment} and subsequent metallization on the surface, wherein the pretreatment comprises the steps of: 
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A polyimide surface is pretreated in { HEAD ~ preparation } for { TAIL ~ an adhesion promotion treatment } and subsequent metallization on the surface , wherein the pretreatment comprises the steps of :
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH