• 
• Istanbul Chamber of Industry

• 
• Çerkezköy Organized Industrial Zone

• 
• Çerkezköy Chamber of Commerce and Industry

• 
• Istanbul Mineral and Metals Exporters' Association

• 
• Association of Ingot Producers

• 
• Association of Copper and Brass Manufacturers

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• Copper.org

• 
• American Society for Testing and Materials

• 
• American Society For Metals

• 
• European Copper Institute

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• LME

• 
• Ekosarı

• 
• Federal Metal

• 
• Wieland AG

• 
• Sambo Copper Alloy Mitsubishi Shindoh

• 
• International Wrought Copper Council

• 
• Antimicrobial Copper

• 
• International Copper Association