We do assemblies of Single-Sided PCBs, Double-Sided PCBs, Multilayer PCBs, Rigid PCBs, Flex PCBs, Rigid-Flex PCBs We pride ourselves on our efficient and high-quality turnkey PCB assembly service. CEM employs a number of strategies in Quality Management, operations management, sourcing and process controls to ensure that every PCB order is done right the first time. Electronic Hardware Design