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DOWA Hightech
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Johnson Matthey
Mitsui Kinzoku
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Yamamoto Precious Metal
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Shin Nihon Kakin
Tokuriki Honten
Tongling Nonferrous Metals Group Holding
CNMC Ningxia Orient Group
Ningbo Jingxin Electronic Material
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RightSilver
Changgui Metal Powder
Yunnan Copper Science & Technology