5.Built-in the latest chip, made of copper wire, more durable, so that customers no longer worry about damage; the packaging is made of high-hardness paper, and a new layout design is used on the packaging, which is more convenient for customers to sell. The outer packaging is made of high-hardness paper, which can better protect the data line from loading, packaging, transportation and delivery. We also provide packaging bags and promotional posters, which are more convenient for customers to sell. 6.Provide one-year after-sales service, if you have any questions, please contact us in time, we will provide a full range of after-sales service for customers, so that customers have no worries;
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