1.PCB/PCBA service 2.ISO9001, ROHS, UL 3.Reliable quality, ... 4. Provide wide range of choice for components Material CEM-1,CEM-3,FR-4 High TG FR-4,Lead free ... Ink Gold plating: AU 1-5u'' Immersion Tin: 0.8-1.2um Immersion Silver:0.1-1.2um ENIG:AU 1-5U''CertificateISO9001, UL, ROHS ... packing or according to customer's requirementUsual delivery4-6weeks sound circuit board assembly