... .Xiamen Jinbo Noble Metal Product Co., Ltd., a subsidiary of Hongfa Electroacoustic Co., Ltd., was established in 1995 as an ... line leading domestic and international counterparts , which enable a yearly productive capacity of more than 2 billion pieces contacts. We ... so on, which let us more professional and perfect.Silver Contactsface material: Ag,AgNi,AgCdO,AgSnO2,AgSnO2InO3,AgZnObase material: ...