Metrod Holdings Berhad
Libo Group
Ningbo Jintian Copper
Jiangsu Xinhai
Aurubis
Wieland-Werke
SAM Dong
KGHM Polska Miedz
Wangbao Group
Luvata
Mitsubishi Materials
SH Copper Products
KME Germany
Aviva Metals
Citizen Metalloys