You need a warranty card to buy Dockby. You can use the warranty card directly. There is no maintenance point on the warranty card.

The after-sales service telephone number of Multi-subjects is: 0532-885 16.

The website is www.tobrbi.cn.

Address: No.619, Jiushui East Road, Qingdao, Shandong Province

This is the information on my warranty card. You can make further inquiries by phone or website.

I hope I can help you.