vacuum extraction and liquid filling are completed automatically, so the traditional cumbersome filling process (liquid filling -- circulation exhaust -- liquid filling) can be omitted. It enables smart liquid filling through QR code scanning, automatically identifies the type of electrical cabinet, performs intelligent liquid injection, and stores traceable injection information. 

Air tightness and leakage detection are also integrated, which saves workspace, improves production efficiency, and reduces costs. It supports different liquid filling volumes (1-500L/unit) and various types of liquid filling ports for one-time intelligent liquid filling.