... the infusion, because the liquid temperature is low, often leading to patients, cold extremities, or even numbness, pain, severe vascular ... to liquid cooling. This product has a constant heat output, easy operation, safe and reliable, non-toxic, odorless, sterile and without side effects ... . 4) Performance and indicators: a) The heater will start to be hot after tearing about 10min.,and keep near 3 ...