Provide a skin anesthesia training piece and a ring infiltration anesthesia training piece. 1) Three kinds of surface markers represent various minor operation areas. 2) Ring configuration is suitable for local anaethsia of finger and toe.

1.  Three kinds of skin modules: sebaceous gland resection module, lipoma resection module and common skin diseases management module. 2.  Each module consists of three pathological changes: skin tag, nevus and seborrheic keratosis. 3.  And these pathological changes can be resected