DELONG will never offer you fake and inferior products !!!

Our products will be fully tested before shipment , please be rest assured to purchase from us !

All our products have one year quality warranty , if there is any defective , pls contact us ASAP,

we will send you replacement at our expense . 

Our delivery time for samples is usually 3-5 days , for normal order is usually 10-15 days .

Our professional salesteam will reply you and help you to solve problem within 24 hours

QC Check:

The excellent quality is originated from elaborate design, scientific management, devotional manufacturing and sincerely services to our customers. Our QC strict standards and are as following.
1. All raw materials and accessories must be checked or tested before entering production facilities. All un-qualified materials are immediately rejected
2. We provide quality control testing and analysis for every product line
3. Workers manufacture products strictly accorded to technical documents. The products of every day will be checked firstly by the workers, then by our full time QC inspectors. Mass production will be started when the products have been have passed inspection
4. During mass production, our QC staff will periodically check products for the random testing.
5. Our QC team completes a tour of inspection and parts are spot checked before they are able to move on to the next phase in production
6. Finished products are checked to determine their quality level
7. Quality feedback from the marketing department is rapidly delivered to the QC and technical departments, allowing design improvements and corrections to happen as quickly as possible

Company Information: 

Shenzhen DeLong Energy Technology Co., Ltd.(Dlongbattery) is a professional new energy supplier in China focusing on the manufacture, research and sale of lithium ion battery product worldwide ,it was established in 2006 and becoming the leading player in the new energy field through several years development .Delong company integrates the cell manufacturing and offer of power solution in according to different application purpose ,our product are widely applied on:common digital devices battery , high discharge rate battery,powerful electric vehicles battery ,low and High temperature lithium ion battery ,power storage and back-up battery pack etc.