Terms of Service Service Tenet: Customer satisfaction is our primary She added Pledge: Chang Yuan Electronics Co., Ltd. of Dongguan City, promised to sell multimedia speaker products to provide "replacement for three months, one year warranty, five-year paid maintenance," the nanny service. Three replacement: Users from the date of purchase of products per chang (the official date of purchase invoices, the same below) within three months of normal use speaker failure, in the absence of the appearance of damage, the annex to complete the case, the same model can be replaced new machine; One-year warranty: Yuan Chang users from buying the product within one year from the date, in the course of non-human cause of failures, our company provide free warranty service; five years of paid service users from the purchase date of Yuan Chang products, can provide only charge within five years maintenance materials, the maintenance cost. Special Note The following conditions who can not enjoy our free warranty service, you can choose paid services (labor cost + materials fee). 1) man-made damage to the product: (eg, crushing, bumps, scratches, etc.). 2) product use violation caused by the product damage. 3) Product serial number, bar code number, the warranty sticker has been altered, deleted. 4) unauthorized repair, misuse, abuse, accident, alteration, improper installation, force majeure and other factors. 5) without a valid invoice, receipt. 6) No name and address, date of manufacture, product certification. 7) has exceeded the warranty period products.