(1) Can meet with vacuum capping and non-vacuum capping; 
    (2) Adopt manual in-out mode and vacuum capping method, and the vacuum chamber selects fixed outer guard and up-down lifting structure; 
    (3) Adopt human-machine interface control and automatic vacuum gauge detection, and the pneumatic capper can vacuumize and cap 100 or 200 blood collection tubes simultaneously; 
    (4) Ensure product vacuum precision and high qualification rate, easy operation and low failure rate;