Yu Cheng Electronics Co., Ltd. Ningbo, established in 2003, August 26, 2006 establishment of the Ning bo, Ningbo Branch is responsible for manufacturing navigation systems and research and development, we are a foreign investment enterprise with independent import and export rights. Our predecessor is good country electronic components factory, professional production of loudspeakers set up in 1989. Our main products: toy speaker, toys , ceilling speaker ,outdoor speaker ,pillows,pillow ...