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Good Toughness Aircraft Grade Aluminum Alloy , 7000 Series Aluminium Alloy Sheet 7A05 7A15 7A19 7A52 Alloy: 7A13 7A31 7A33 7A16 7A17 7a09 7005 7001 7010 7049 7181,7A05 7A15 7A19 7A52 7000 series ...