Hi , I like to have further information about your bone conduction earphone such as brochure and price list. I need you to quote 500, 1k price and sample as well. By the way, are you surely manufacturing bone conduction earphone ? Best regards, Eric ******************************************************************** General Manager / Sales & Marketing Haneul S&T Co., Ltd #501, Hanwoong Bldg, 35, 140beong-gil, Gongdan-ro, Gunpo-si, Gyenggi-do, Korea .com****2-70-4916-4908 Cell: +82-10-4650-0635 ****eric.seon ****suncity93 ******************************************************************** Show More