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◆ Under normal conditions of use:

   A. The company produces each product, at the date of purchase and use within six months, under normal usage, are entitled to quality assurance and service.

   B. in the quality assurance of the expiration date, the product if it fails, will be repaired or replaced reality.

   ◆ Due to problems caused by improper use of the product, belong to paid services:

   In the natural cis bad and non-normal use will destroy, not the quality assurance requirements of range, quality requirements need to charge a late fee repair.

   ◆ Please make higher quality requirements of the users directly with the company:

   Please send the product together with copies of invoices or sold with the exact names, date of purchase and use a copy of the invoice mailed to the north along Chang Jun-controlled (Beijing) Technology Co., Ltd. Service Department for technical appraisal, we will promptly provide you VIP the paid services.

Bei Chang Jun Kong (Beijing) Technology Co., Ltd. Address: Laoniuwan Industrial Park, Changping District, Beijing, China  code: 102206 tel: +86-10-52867133 fax: +86-10-80725288

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