We are a professional of MP3 play production, training, R&D and maintenance company. From 2005, we committed to the maintenance of MP3/MP4 players and firmware technologies work collected. We designed the website www.impn.net . We edited  the first book of  "MP3/MP4 maintenance training course," in 2006. In 2009  we co_published the latest book of "MP3/MP4 player to good maintenance of entry," with the Chinese People's Posts & Telecom Press . 

        the book published in 2006

  the book co_published in 2009

We have established cooperative partnership with more than 200 MP3 player production, R & D enterprise in Shenzhen China, and collected more than 15,000 MP3 firmwares, articles, drawings and  thousands of copies of the maintenance and upgrading of tools, training nearly 500 members of the maintenance MP3 trainees, website:http://www.cnwxw.cn .

We also developed  a maintenance of the English version MP3 software tools .

    2008, we opened the  English version  firmware download website www.skmp3.com for foreign users, and continuously enrich the U-disk MP3, MP4, CMMB ,DC ,DV ,PC, Harddisk and Mobilephone maintenance skills ,drawings, firmware ,upgrade tool ,technology such as online download service and support services online.
    In order to meet the needs of foreign customers, we have  collected MP3/MP4/U-disk firmware ,software and drawing by  26 DVDs to sales of 120 US$ (not including freight), we can according to the customer by DHL UPS EMS and other international express delivery, freight separately. If some countries can not express CD-ROM, we suggest that users can purchase a 160GB mobile hard drive which cost 65US$, we can copy more maintenance information of the mobilephone, harddisk and PC sent to the customer.

Bexause the freight and tax is too expencive for some country,then we set a server for FTP the 100GB firmware data.If the custom wish use FTP to buy the firmware data ,then the payment need 150USD.

Since July 1, 2009, the purchase of our 26 DVDs users, we will Presented the  VIP membership of www.skmp3.com for a year,which value is  60US$dollars ,The VIP members can free download all of the information on the site in one year.
    The purchase method: the user can pay by  PAYPAL , Western union or your friends in China, if the fear of commercial fraud, we can open one day VIP membership to you before your payment.
    Members of our website is divided into two forms of payment, Firs is paid for Valid VIP members, 60US$ / year, 10US$ / month, 0.5US$ / day, in the VIP member, the web site are free to download all the resources ; The second is based on the information to pay for each download, the user can pay for our website to download local currency, 1US$ Exchange 100 download points, download each software need 1-100 points.  

Part of the information in our website need to pay and some are  free, We opened a forum bbs.skmp3.com for sharing technology and information activities of free points, if a user upload an effective technology to share information,Then our staff through the taxation will receive the corresponding points. At the same time, users can also award their own technical information in our forum to sell to earn points, points can be exchanged for users to download our currency or US$, and the Point also can be used to buy our products.