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美國狄夫斯高 DeFelsko 
DeFelsko Corporation, a U.S. manufacturer of Coating Thickness Gages and Inspection Instruments, has been providing Simple, Durable, and Accurate gages since 1966.
自1966年始專業生產測厚儀等檢測儀器，品牌有Positector、Positect等，產品操作簡單、耐用、精確度高。