WJM Document 6 pages. Box York, PA Allegedly required 2. Because the heating coil is completely enclosed in a quartz tube and consid- erably thicker than other types, there is a great reduction of thermal stress in the coil. Document Information click to expand document information This 3-sentence summary provides the key details about the document: The document tests and evaluates dental porcelain furnaces used to create dental restorations.
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