DPB-250B type and DPB-140B type sensor auto-checking bubble cap packaging machinery adopt computer programmable controller, touchable board operation and frequency converter to adjust the speed with the performances of high automation, ease of operation, long service in use advanced technology, elegant outlook full functions and stability operation. It is the most idea AL-AL, AL-PL and paper-plastic bubble cap packaging machine, which is favored in the market at home and abroad. It is in conformity with the standards in the GMP and also has passed the provincial level scientific test.