... /m-k,3.0W/m-k,4.0W/m-k,High-conductivity5SurfacePlated gold,Imm gold,Plate Silver,Imm Silver,OSP,HASL ... with MIL-SLD-105 II,heavy defeat AQL=0.65,light defeat AQL=1.022Quality StandardsNational andards:GB5488.2-88 Metal ... send the all files with attachment to you aluminium pcb for street light