... pcb, more layers Multilayer pcb, 4 layers pcb, hdi board, electronic board:Layers:4- 16 layers or more;Material: FR-4 ... *1200mm ;Application:Cam350,pads2000,proter DXP;Blind/buried via holes: OK;Soldermask:green,black,red,yellow,white etc;Surface finish: HASL ... control. Multilayer pcb, 4 layers pcb or more, hdi board, electronic board