Sun-kai (Bsun) electronics, domestic production of professional headphones, power sockets, switches one of the largest manufacturers. Founded electronic components has been engaged in the development, production. Today, Bsun has now become a complete product development, production, assembly, sales and after-sales service system. Strong technical force, the production of advanced monitoring equipment. Seiko products manufacturing, full range, quality, excellence, and in March 2001 passed the ISO9001 quality system certification in December 2005 through the ISO14000 certification products are exported to Southeast Asia, Europe and America, praised by users.