Dear sir, Our company focus on maufacture dvr card and cctv camera. Dvr card includes gv series, kodicom series, avermedia series,7130series, wdt series,also we have some cards made according to the customers' requirement. Nowdays, we produce two more new products: Telephone recording system and Wireless data module, and the OEM about them also welcome. As a manufacture, we always try our best to make more products to meet the customer need,ans always keep high quality, sincere service and low price as the promise and value to our customer, for we know it is so important for us to be reliable, trustworthy, and offer high class products to our customers to keep long tern cooperation. Looking forwards to hearing from your reply Best Regards Sincerely, Jancy email: sales06 at hkhuawei net MSN:huawei0602 at hotmail com skype:jancy20061 Yahoo:jancy_20062000 ICQ:418008540 Tel: 86-755-83756060 FAX: 86-755-83755169 Add:Room 1301, shenkan Building, shangbu middle Road, Futian District, Shenzhen,guangdong,china