... 4, electronics assembly contract assembly manufacture service, EMS , PCB assembly. 1, full turnkey solution( SMT, AI , PCBA , testing , ... F4BK PCB, Ceramic PCB, Rogers PCB, Aluminum PCB.1.Single-sided, double-sided and multi-layer boards.2. ... pad diameter10mil10Max proportion of drilling hole and board thickness1:12.511Minimum linewidth of Idents4mil12Min Height of Idents25mil13Minimun thickness of ...