... offer OEM/ODM Electronic Card Assembly, Print circuit Board Assembly (PCBA) including sourcing of components, welding, assembly and testing. ... modules, telephone, wireless modem, remote control products. We provide PCBA Vertical Integrated Manufacturing Solution: - Circuit boards 1 to 28 layers ... any requirements!Yishi is your sincere partner forever! PCBA, OEM/ODM PCBA, Print Circuit Board Assembly