... the fluid material.2.adjusts the good barometric pressure, the time and the choice suitable needle ju ... user need, have the size different kind of syringe, the needle ju is user's best partner ... appearance, the operation use is simple, through the syringe pressure, the drop rubber time, the pinhole size, flows ... rubber time, precision high);2.input barometric pressure: 0.5 Mpa 10.7 MPa;3. output ...