Shenzhen Sunwind Energy Tech Co., Ltd is one of the professional battery manufacturer in China, which commits to the battery production, sales and after-sales service. we have a professional technology team with over 10 years industry experience, meanwhile we established our own brand - “ LIANGMI” in 2013. Our main products are Mobile phone battery, Digital batteries, PC tablet batteries, Smart Watch batteries, BT Speaker batteries, POS Terminal batteries, Scanner batteries, GPS batteries, USB rechargeable batteries and Customized battery packs. OEM&ODM are welcome.

Sunwind attaches great importance to the training of the talents, we have a professional quality control team and a group of high-quality technical and management personnel. "Thanksgiving" is the soul of our enterprise and “Customer Supreme Quality First” is our principle. Our market not only face to the domestic but also the overseas. In order to let more and more foreigners know our brand, these years we put more efforts to expand our overseas markets. Nowadays our products have exported to many countries and regions.

In 2018,our branch factory - Shenzhen Sunwind Energy Tech Co.,Ltd (Dongguan Branch) established, the space is about 3 times than our Shenzhen factory, the professional auto-machine helps us to press the cost and provide fast lead time to our customers. Our professional Lab help us to control the quality more strictly and provide safer and best quality goods to our customers.

 1. What’s your main product?
Main products are mobile phone battery, tablet battery and customized electronics battery.

2.What’s the warranty in your company?
We offer warranty for 1 Year if there is some quality problems.

3.What’s the shipping for goods?
In order to reduce the cost of customers, usually we send goods by express like DHL, UPS, FedEx, TNT and EMS because we enjoy the VIP price If customer has familiar shipping agency, we can send goods to the address you provided

4. How long goods can be received?
Customer will received goods within 5-7 days. If there is any accident in shipping we will notice you as soon as possible.

5. How to take the risk during transportation?
We would bear the risk 100% in case the goods were missed or detained by custom in China. But if goods were missed or detained by custom occurring in other country excepting China, buyers are responsible for loss.

6. Could you design the battery as requirements?
Yes, we have a professional technician team, OEM and ODM are welcome.

7. How to deal with the returns?
We will check the returns in 2 working days After checking we will provide testing report to customer. We will resend new replacements with new order.

8. Who will pay shipping cost for returns?
Negotiable base on situation, we will highly protect customers benefit.