SANDI has pioneered the application of 3D printing in rehabilitation medical treatment (3D medical treatment), obtained China's first registration certificate for 3D printed customized titanium alloy hearing aids, and established a sales channel for "Taiyin" system hearing aid products. At the same time, we have 3D printed digital dental equipment and material technology, and promote digital dental solutions in dental clinics, including dental implant surgical guides, dental molds, temporary crowns, crowns, veneers and so on;