four layer communication board surface oxidation pcb circuit manufacturers processing proofing delivery time fast and high quality

processing custom: yes item no: 184 brand: leabon model: 184 mechanical rigidity: rigidity number of layers: multiple layers 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