1. Unstained-- black toner powder only touch with pump line;                                                                                                         2. Endurable--suitable for filling all kinds of color toner powder;                                                                                               3. Easy to clean-can work again only need to replace with another pump line;                                                                                            
4. Multipurpose-softness,low scissoring, flow suits common toner powder and high viscosity toner powder;                                                                                   

5. Few maintenance-no sealing parts and valve;                                                                           

6. Fine respiratory efficiency-not siphon, can  dry inversion and self respiratory.
7.Advantage:Non-cleaning.