... higher quality, more competitive price, quicker delivery and better logistic service…Welcome to send us RFQ! ... for your reference, for more messages, pls contact with us freely!ItemSpecification MaterialFR-4 / Hi-Tg FR- ... RoHS Compliant)/CEM-3/CEM-1/AluminiumLayersingle layer,double layer,multi-layer(4-10)Board Thickness0.3mm ... ,UL, Welcome to visit WALBOND ! loudspeake and radiator PCB with UL standard