... pcb,double sided pcb,multilayer pcb,flexible pcb,fr4 pcb,fr2 pcb,fr1 pcb,cem1 pcb,cem3 pcb,aluminum pcb,etc. General Specifications Capability ArticleDescriptionCapabilitySizeMax.Finshed Size20.9”x24.4 ... sided:0.008”±0.004”(0.2mm ±0.1mm)4-layer:0.01”±0.008”(0.4mm ±0.1mm)8 ... YISO Cert.ISO9001TS16949YISO14000Y Factory SilhouetteIf you are confused with pcb,kindly contact me for more details ! 4 layer pcb