... pump,no pollution 2, it can draw out the ink by self boot to the bag 3,process inks ... error: ±0.1ml4,Convenience: it can draw out the ink by self boot to the bag, and freely controls ... the proce while different kinds of ink flowing in the pipe.5,Economy: discharging the air ... avoid of wrong operation or causal touch.8,Multipurpose: ink packed by bottle can also be applied to.9, ...