... s process capacity for your reference, for more messages, pls contact with us freely!ItemSpecification MaterialFR-4 / Hi-Tg FR-4 / Lead free Materials( ... RoHS Compliant)/CEM-3/CEM-1/AluminiumLayersingle layer,double layer,multi-layer(4-10 ... )/±0.2mmPunch±0.1mm E-testing pass percent97% pass for the first time,+/-2%(tolerance) Certificate SGS,ISO,ROHS, ...