... , TFT, precision ceramic, quartz oscillator), PCB, PE, electrolytic capacitors, rubber and plastic keyboard, computer ... etc.; electrical, communications, hardware, chemical, sports equipment ... a quick plug nitrogen filling interface, convenient nitrogen filling and control the nitrogen flow. Specifications ModelHDQG-9020AHDQG-9050AHDQG-9120AHDQG-9200AHDQG-9030AHDQG- ...