AHJ 三爪密封型機械夾爪

https://drive.google.com/open?id=1pO0b3mHlPaZTyM0EWLtQmwsDoRzNVLWl
https://drive.google.com/open?id=1pO0b3mHlPaZTyM0EWLtQmwsDoRzNVLWl