dear sir/madam, we are manufacturer of car audio speaker & horn in guangzhou, china. such as speaker, horn, amplifier, loudspeaker, woofer, sub woofer, bass, tweeter and so on. the products which we produce are of high quality and competitive price. and we can provide you with an oem service. the website of our company is "http://www.gzopai.com ".you can open it to get more information about our company and our products if you have time. do not hesitate to contact us if you want more information. company: guangzhou oupai electronic co., ltd., china website: http://www.gzopai.com contact person: leo liu msn or mail: gzopai-yw@hotmail.com tel: 0086-20-86058056/86059099/86059567-22 fax: 0086-20-86058056/86059561/86059567-19 mb: 0086-20-83685251 dear sir/madam, please save this letter, it may be useful for you/your friends/your wholesaler and us one day. looking forward to hearing from you as soon as possible. thanks! best regards! sincerely, leo liu