1Speed Adjustment: This infusion pressure bag is used to adjust the infusion speed according to the high and low inflation pressure. 2Good Air Tightness: This bag adopts TPU nylon composite cloth, with good air tightness, no leakage, stable and reliable. 3Over Pressure Protection: The bag will automatically deflate when the pressure exceeds the maximum pressure. 4Pressure Display Column: Design with pressure display column, prevent the bag from inflating too much and being damaged. 5Main Purpose: Used for patients who need emergency infusion and blood transfusion in clinical emergency, intensive care unit, anesthesia department and other clinical situations.