Provide consumers with economical and practical, safe and reliable quality products is the frequency mail tunnels is the premise of the survival and development.Now in the marketing, who have more consumers who is the winner.The frequency mail tunnels knew good after-sales service with good reputation, to bring more consumers.Good after-sales service is the important way of setting up enterprise brand and dissemination enterprise image, is also one of the competitiveness of the enterprises.Therefore, after-sales service more than a decade has been our mail tunnels one of the focus of the work, the frequency is the frequency mail tunnels an effective measure to keep the customers satisfaction and loyalty.After 10 years of industry accumulation, the frequency of mail tunnels brand after-sales service network has covered all provinces and will be a line key cities, forming a set of standardized, orderly system, after-sales service system.The frequency mail tunnels rapid fluid has been adhering to the "excellent product quality and perfect after-sale service system" to win the market.The frequency mail tunnels after-sales service terms as follows:First, service commitments1, the terms of this warranty applies only to consumers to buy the company's products.Consumers since the date of purchase products (with valid purchase products effective purchase invoices and receipts), the host, the extension of product can be for 12 months of warranty service.Any questions please contact manufacturer customer service, qualified rear can return to factory maintenance.Not out of warranty products appear quality problem, manufacturers bear the maintenance cost and freight back and forth.2, effective warranty service is limited to the normal conditions of use.3, refund, exchange of commodity packaging appearance in good condition, the attachment must complete, otherwise not be processed.Second, the warrantyEffective 1, the warranty is limited to the normal conditions of use.User artificial reason damage cannot enjoy the warranty service, need to charge for maintenance.2, the warranty period from the date the fill out the purchase date of power-train.3, all kinds of related labels, serial number tags do not tear, otherwise no warranty.4, shell, batteries, power supply and related parts and consumables does not belong to the warranty scope.5, the damage caused by force majeure, do not belong to the warranty scope.Third, does not belong to the content of the scope of free maintenance service charging (repair)1, more than warranty period.2, the damage to the company maintenance.3, there is no guarantee and proof of purchase.4, improper use, due to human factors, input voltage or inappropriate without repairing and modification caused damage, etc.Artificial reasons include: dismantling or modified, natural wear and tear, mechanical damage, water, fire, not according to user manual use, etc.Fourth, matters needing attention1, users, please read the user manual carefully before using the host.Five, the after-sales service telephoneNote: this system all components products are the products of the manufacturers, with independent intellectual property rights, there are plenty of related accessories.