... time:5-7days 3.Certificates:UL,ISO9001:2000,RoHS 94vo pcb for electronic productsMaterial: ceramic , F4 BK-2 , Alu, Rogers, High Tg ... stable. * We choose the best material for all our products. * We will send the boards to you by DHL, TNT, UPS, FEDEX ... and so on to saving the transport time. * For responsing promptly, we will reply your e-mail ...