& middot; according to the different needs of different customers，Design the most suitable solution;
& Middot; Perform the company's detailed working principle for the company's products、Operation usage、Simple maintenance、Failure judgment and other series of professional training。
1. Debug opening support
& middot; Provides allocation and debugging of Dongtu products;
& middot; Provide communication failure processing during the project implementation process;
& middot; Cooperate with the project acceptance.
& middot; Provide communication failure processing during the operation;
& middot; Provide on -site network transformation involving the configuration and debugging of Dongtu products
& middot; After being recognized as product quality problems through Dongtu Technology after -sales personnel，According to the product SN number you provided,，Maintenance or repairs。
& middot; Dongtu Technology after -sales departments After receiving the faulty equipment，It will complete the maintenance and treatment of the equipment within 3 working days (if you encounter difficult problems and complicated problems，Maintenance time will be appropriately extended，We will inform us as soon as possible)。
Warranty commitment:
1, warranty service commitment:Provide "One -year replacement, five -year warranty”，(Edge controller series products from two years from the date of purchase), during the warranty period, equipment maintenance is free.
(1) "One -year replacement, five -year warranty"Refers to the first year of product purchase is a free guarantee period，Free maintenance period，Specifies after the warranty period for maintenance，Only charges the work fee，This commitment is different from Dongtu's service commitment to customer service commitments from the warranty period of business contracts。
(2) "Edge Controller Series Products from two years from the date of purchase "refers to the free maintenance period for product purchase，Repair due to product quality problems，can be maintained for free，Excellent maintenance during the warranty period，Only charges the work fee。
(3) The range of warranty is limited to product host、Interface Card、Signal output board card、Satellite receiving antenna、SFP module; packaging and various connection cables、Software Products、Technical information、Components with attenuation characteristics (constant temperature crystal and 铷 atomic clock)、Loss device (touch screen) and other attachments are not within the warranty range。
2、Software upgrade service:Dongtu Company with free version upgrade service for users，Free software upgrade service does not include the function upgrade service of the system software。
3. Maintenance/Repairing products The transportation costs generated by products:
（1）If the quality problem occurs within one week after the product is purchased，and no scratching appearance，After confirmed by the Customer Service Center of Dongtu Company，new products can be replaced directly;
(2) During the warranty period, Dongtu Company sent the product to the customer or dealer after replacement warranty;
（3）Due to product batch problems，Dongtu Company actively recalls replacement。
※ One of the above three conditions is affordable by Dongtu Company， In addition, the transportation costs incurred、Customs clearance expenses, etc. shall be borne by customers or dealers。
4, charging maintenance commitment:If the product is charging maintenance，For maintenance parts will enjoy the free warranty period of 12 months from the date of repair，Please keep your maintenance voucher。
The following conditions are not the free guarantee warranty range:
& middot; failure to install or use product damage caused by the requirements of the instruction manual;
& middot; the product exceeds the replacement and warranty period;
& middot; product barcode or flowing number is modified、Delete;
& middot; The product is authorized by our company to repair or disassemble;
& middot; without our license，Customers change their inherent setting files or virus destruction without authorization and cause product failure;
& middot; The customer sent back the return on the way back to repair due to transportation、Damage caused by loading and unloading;
& Middot; The product is damaged by accidental factors or human behavior，If input is not suitable for voltage、High temperature、Water intake、Mechanical Destruction、Broken、Product serious oxidation or rust, etc.;
& Middot; Products due to irresistible natural forces such as earthquakes、Fire caused damage。
Contact information:
Industrial network switch
Company Customer Service Hotline: 010-88796676 (Direct Dial) or 010-88798888-8601 or 400 Service Hotline: 4006112028
Smart Controller
Customer service hotline: 010-88798888-8321 Sales Hotline: 010-88798888-8305
Online customer service mailbox:service@kyland.com.cn
