... your reference. DescriptionDetails SpecificationBase MaterialFR-4,Aluminium-backed board,Halogen-free,Lead-free compatible,High Tg,High CTI,CEM-1,CEM-3 etc ... :01Surface Finished typeHASL,Flash golds,ENIG,OSP(lead freecompatible),Carbon ink,Peelable S/M,HASL(lead free),Immersion silver/tin,Gold finger plating ...