... ,1OZ,Lead Free 2.17 years experience in PCB,s Processing Capability Of StandardNO.ITEMTechnique Data1Product TypeAluminum ... StandardsNational andards:GB5488.2-88 Metal-based holeDouble-sided PCB technical conditions International Standard:IPC-A-600EEnterprise Standard: ... Board Co.,LtdContact Person / PositionEason XiangCompany Add.7 th block, 3 rank, xinqiao xinfa industrial park, shajing town, ...