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The company's products are all implemented with "three guarantees". Within one year, if the product is purely a quality problem, the company will be responsible for replacement; if not artificially damaged within five years, the company will provide free maintenance; Repair is free, but repair costs are charged as appropriate.

For the purchase of ancillary products by group units, in addition to the "three guarantees" in accordance with the aforementioned "three guarantees" clause, the company will also provide long-term tracking services for these batches of products: