1,High quality and reasonable price products,with best service and fast shipping. 2,Certification CE & Rohs. 3, ... (Funtional Circuit Test) technology.4.UL,CE.FCC,Rohs standard5.With IPC-610D manufacturing and other international standards.6.Nitrogen gas ... to ensure high quality.ISO 9001:2008Factory located in China Security PCBA with 5 BGA