... , CE and FCC Blister card packing wooden earphone for MP3 MP4 Mobile phone PC1)Description *Sensitivity : 106dB S.P.L ... all types of headphone, earphone, portable speakers and phone cases for since 2003.With 500 staffs and over 50,000 ... , painting department, assembly department, and quality control department.Certification: ISO 9001;2000, CE, Rohs. wooden earphone for MP3 MP4 Mobile phone PC