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The product is registered in Shanghai Futures Exchange (SHFE) and London Metal Exchange (LME). 
Contact Methods: 
1.Shanghai Trade Investment Co., Ltd of Tongling Nonferrous Metals Group? 
???? Tel: 021-68536392 (Deng Yapeng)? 
???? Fax: 021-68536339? 
???? Email: dyp316#qq.com
2.Commerce Department? 
???? Tel: 0562-2834694 5860888 (Xu Hui)? 
???? Fax: 0562-2834487