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 | Cole-Parmer 660000391114 雙鵝頸燈管 |
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 | Ashcroft 30-2232-SD-20L-XU1-15PSIV/30 低壓波紋管壓力表Digital Sanitary Gauge, 2" Tri-Clamp, 30 to 0" Hg, line powered |
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