Kingmass is a middle size factory with 6 years history, specializing in manufacturing and exporting any kinds of stereo earphones headsets, multifunctional headphones ,U-disk,mp3/4/5 some accesories for fashion customer electronic products. We have strict control system four steps to ...

Located in Hunan (which is a major manufacturing province), Changsha Bio Electronic Trading Co., Ltd an importing & exporting company which works on researching developing and selling electronics, gift articles energy-saving products. The high efficiency quality working team make sure of ...