... About us:Wanyuan is a SMT PCB assembly(PCBA) manufacture with 5 years electronic manufacturing service (EMS), our PCBAare applied ... reliable service supplier for the honored customer! 2.Product DescriptionThis PCBA product is suitable for mobile phone!Max layers: 16Base Material: FR-1 ... (Bonding pad): HASL, plated gold, immersion Au, Ag, Sn, ...3.Our certification:RoHS,SGS,ISO9001:2000,IPC-610,UL,CE4 ...