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Premium High Vacuum Adapter, with ASTM & DIN Joints and PTFE Needle Valve Stopcock With DURAN® & PYREX® Stopcock, -40°C+200°C, 진공/고진공 PTFE 밸브 어댑터 Premium High Vacuum Adapter, with ASTM & DIN Joints and PTFE Needle Valve Stopcock With DURAN® & PYREX® Stopcock, -40°C+200°C, 진공/고진공 PTFE 밸브 어댑터