China is one of the largest copper and other non-ferrous metals manufacturer and exporter on the globe. Here are some famous copper mines in China: Dexing (江西德兴), Tongling (安徽铜陵), Daye (湖北大冶), Dahongshan (云南大红山), Zhongtiaoshan (山西中条山), Dongchuan (云南东川易门) etc. Following non-ferrous metal suppliers, esp for copper ingot, have been sourced but not inspected by STIN verification team in China, here is the list for your reference:
1.Jiangxi Copper Group Corporation 
  Product: copper ingot, gold and silver ingot, alloys
  Tel: 0701-3777070

2.Zijin Mining Group Co., Ltd
  Product: gold ingot, copper and silver ingot, zinc ingot, alloys
  Tel: 0597-3833105  

3.Yunnan Copper Group Corporation 
  Product: copper ingot, gold and silver ingot, zinc ingot, alloys
  Tel: 0871- 63175096

4.Tongling Nonferrous Metals Group Corporation 
  Product: copper ingot, gold and silver ingot, alloys
  Tel: 0562-5860016  5860000  

5.Hunan Shuikoushan Non-ferrous Group Co., Ltd
  Product: lead ingot, zinc ingot, copper ingot and silver ingot, alloys
  Tel: 0734-7582281 

6.Jinchuan Group Co., Ltd
  Product: copper ingot and silver ingot, alloys
  Tel: 0935 - 8811528  

7.Yunan Metallurgical Group
  Product: tin ingot, lead ingot, zinc ingot, copper ingot, alloys
  Tel: 0871-8891800  

8.Jinzhou Copper Industry Co., Ltd
  Product: Copper ingot
  Tel:0750-8663288  
 
Important Notes: These copper ingot suppliers are well-known for domestic market in China and most of them have NO direct Export License, foreign clients have to work with a qualified export or import agent like STIN (www.chinabizservices.com) in China if they'd like smooth business for such items. 
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