Smter undertake professional PCB welding business, providing SMT (surface mount) processing, BGA, DSP, CSP, QFN, QFP, PLCC, 0805,0603,0402,0201, THT (plug-ins) and other packaged devices welding, as well as component procurement, assembly, testing, aging, testing, packaging, shipping, etc. to the whole process of service-oriented companies.