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Chalcopyrite ( / ˌ k æ l k ə ˈ p aɪ r aɪ t, - k oʊ-/ KAL-ko-PY-ryt) is a copper iron sulfide mineral that crystallizes in the tetragonal system It has the .
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SKY R&D team is made of 78 senior engineers. The top seven engineers are winners of special central government allowance.
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