| Symbol | Name | Country | Exchange |
|---|---|---|---|
| 1527 | Zhejiang Tengy Envi Tech Co | HK | HK |
| 045520 | Clean & Science co. Ltd | KR | KQ |
| 119650 | Kc Cottrell | KR | KO |
| 256150 | Handok Clean Tech Co. Ltd | KR | KQ |
| GVS | Gvs SpA | IT | MI |
| 4556 | Bright Sheland International Co Ltd | TW | TWO |
| 8107 | Tayih Lun An Co Ltd | TW | TWO |
| YMFCF | Yamashin-Filter Corp | US | US |