prov:value
| - A plastic substrate is formed using the resin that is made in the way hereinafter described, that is, ceramics such as boron nitride, aluminum nitride, magnesium oxide, beryllium nitride, or the like, and lead-free solders are mixed in synthetic-resin composed of polypropylene, polypropylene sulfide, polycarbonate, polyetherimide, polyphenylene sulfide, polyphenylene oxide, polysulfone, or polypht
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