1. This machine is designed especially for filling of corrosive liquid (Hydrochloric acid) and its unique designed filling structure can effectively prevent corrosion and leakage. 2. Precisely control filling amount with millisecond time. 3. To provide filling speed and prevent foam during liquid filling, the filling head shall be designed into unique adjustable filling form. 4. The bottle feeding method and oriented filling mouth design effectively guarantee matching between the filling head and bottle bottleneck during filling and ensure successful filling. 5. Filling is disabled for lacking of bottles and filling leaves no drop with high filling precision; 6. Easy and convenient operation; reliable performance and safety linkage. Applicable scope: it is suitable for filling of non-viscous flowing corrosive liquid and is widely applied in filling of flowing liquid in industries like chemical industry, cosmetic and agriculture.