| http://www.w3.org/ns/prov#value | - The frame die 35' is made of metal such as copper, 42 Alloy (which is an alloy comprising nickel and iron, with the ratio of nickel to iron 42:58) or the like, on the surfaces, specifically on the under or reverse side, of which a low class oxide 32 is inclined to be formed during heat treatment at 100??? C. to 350??? C. when the electronic part 28 is die-attached to the die 35' through a paste la
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