Grillo-Werke AG
Marzinc
PontenossaSPA
Miike Smelting Co. Ltd. Nyrstar
Recylex
Advanced Nano Products Co. Ltd. American Zinc Recycling LLC
Befesa
EverZinc
GHC Ltd. Symrise
US Zinc
Weifang Longda Zinc Industry Co. Ltd. and Zochem LLC