fr-4 glass fiber board customized processing pcb circuit boards control boarding half hole process

processing custom: yes item no: 368 brand name: lingbang model: 368 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