... HASL competitive price ,best quality, prompt delivery & best service Single-sided aluminum Printed Circuit Board:Layer count: 1Materials: epoxy resin panels ... craft: spray tin,gold-plated,immersed gold,HASL,OSP; Types:Single-sided, Double-sided, Multi-layers (max 6 layers) ... you 99.7% work well perfect products. PHOTOS SHOW Single sided Aluminum PCB with thickness 1.6mm,copper weight0.5 oz,HASL