One: Prento GG Bond Dot Pen solemnly promises one-month replacement, one-year free maintenance and lifelong maintenance.

Second, the products can be downloaded and updated from the Internet designated by our company for free at any time, which can directly support the education of all subjects from infants to 10 years old.

3. Rich reference book distribution system. The books behind are just the prices of ordinary books. In cooperation with China Jilin Fine Arts Publishing House and 265438+20th Century Publishing House, nearly 3,500 books have been published one after another, which can greatly meet the educational needs of infants of all ages.

Whenever there is a problem, please contact the headquarters for free telephone consultation and get help at any time.

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