led control board touch pcb motherboard two-sided tin-sprayed circuits boards intelligent body sensing circuit boarding

processing custom:yes item no:371 brand name:lingbang model:371 mechanical rigidity:rigidity number of layers:double-sided base material:copper insulation material:organic resin insulation layer thickness:conventional board flame retardant properties :vo board processing technology:electrolytic foil reinforcement material:glass fiber cloth base.syi