Brief description about the led aluminum base pcb: 1.FR4,double-sided pcb,1.0mm, ... Material Thickness18um,36um,72um4Heat Conductivity1.0W/m-k,2.0W/m-k,3.0W/m-k,4.0W/m-k,High-conductivity5SurfacePlated gold,Imm ... i will send the all files with attachment to you led aluminum base pcb