Bitfeng Expanded Body has unique cross-linked, high-density multi-morphological microporous structure, which can prevent infection. In addition, it has excellent tissue compatibility and lower absorption rate than similar products. Autologous cells generally begin to grow 3 months after implantation.

"Lixiu" materials are divided into three types: soft, reinforced and molded. The hardness of the soft material is equivalent to that of dermis and is mainly used for facial soft tissue filling and deep wrinkle filling. The hardness of the reinforced material is close to that of cartilage and is mainly used for surgeries such as rhinoplasty, mandibular augmentation, cheek augmentation or frame repair. The main molding materials include willow-shaped nasal prosthesis, "L"-shaped nasal prosthesis, mandibular prosthesis, molded temporal prosthesis, molded zygomatic arch prosthesis and nasolabial groove filling materials.

Which one is better depends on your starting point or your ultimate goal