| Symbol | Name | Country | Exchange |
|---|---|---|---|
| CLZNF | Clariant Ag Nam Akt | US | OTC |
| CLZNY | Clariant Ag Unsp | US | OTC |
| IZCFF | International Zeolite Corp. | US | OTC |
| TOSCF | Tosoh Corp [Japan] | US | OTC |
| IZ | International Zeolite Corp. | CA | TSXV |
| 300779 | Qingdao Huicheng Environmental Co Ltd | CN | SHE |