Qingdao Hosiden Electronics Co.,Ltd.(established March,1992) Chongqingzhong Road 946#, Li Cang District, Qingdao City Shandong, China Phone: +86-532-84813454 Fax.: +86-532-84817832 Products: Receiver units, Earphone-Microphones ISO 9001 (certificated in August,1997) ISO14001 (certificated in December,2001) Copyright(C)2002 Hosiden Corporation. All Rights Reserved.