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"Mamore" (Brazil) and
"Minsur" (Peru) brands are the exclusive source of our raw tin ingot. Both
Mamore and Minsur Grade "A" tin provide consistent high purity (99.95%+),
insuring low trace elements (especially lead), far exceeding the ASTM B339-93 Grade
"A" tin specification. Please compare below, the ASTM B339-93 Grade A Tin
Specification with our sources of tin:
ASTM B339-93 GRADE A TIN SPECIFICATION
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