This product is made of the imported materials from USA——NUSIL, which is divided into three types: rectangle type, kidney type and round type. Structure consists of three parts which is the capsule, catheters and injection kettle. The key component of this product is the special-made injection kettle so that could puncture a hundred times and not leak under the 200Kpa cavity pressure. It has higher security and reliability to ensure the success rate of surgery.