DeFelsko 
-U.S. manufacturer of Coating Thickness Gages and Inspection Instruments, has been providing Simple, Durable, and Accurate gages since 1966.
美國狄夫斯高 DeFelsko PosiTector UTG 超聲波測厚儀 
詳細型號:  PosiTector UTG C1、PosiTector UTG  C3、PosiTector UTG M1、PosiTector UTG  M3(M型可穿透測量 后綴1的為標準型 后綴3型的為**型) 
 
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