... price ,best quality, prompt delivery & best service Single-sided aluminum Printed Circuit Board:Layer count: 1Materials: epoxy resin panels ... gold,HASL,OSP; Types:Single-sided, Double-sided, Multi-layers (max 6 layers) andRigid-flexible PCB, Aluminium board Surface Finishing:HASL( ... 7% work well perfect products. PHOTOS SHOW Single sided Aluminum PCB with thickness 1.6mm,copper weight0.5 oz,HASL