Shanghai tang smart technology ltd., located in the song river area of shanghai city, specializes in one-stop production of pcba and supporting odm services. Scope of operation: one-stop services such as programme design, material procurement, pcb manufacturing, smt patch processing, pcba assembly, aoi testing, capping welding, bga welding ball, x-ray testing, ict\fct testing, finished assembly, 3rd defence, ageing testing, after-sales maintenance。