| Na. | Enw Gwneuthurwr EPS | Graddio fel Tachwedd.2024 | Wefan |
| 1 | Styopek | 18.20% | https://styropek.com/ |
| 2 | Corfforaeth Cynhyrchion Ewyn | 14.40% | https://www.fpcfoam.com/ |
| 3 | Cynhyrchion ewyn Michigan | 13.30% | https://michiganfoam.com/ |
| 4 | Styrotech, Inc. | 10.90% | https://www.styrotech.com/ |
| 5 | Foamcraft USA, LLC | 9.50% | https://www.foamcraftusa.net/ |
| 6 | Jiangsu Sunkaier Industrial Technology Co., Ltd. | 5.70% | https://www.sunkaier.com/ |
| 7 | Corfforaeth Kraton | 5.30% | https://kraton.com/ |
| 8 | Idemitsu Kosan Co., Ltd. | 5.20% | https://www.idemtsu.com/cy/index.html |
| 9 | Storopack | 5.00% | https://www.storopack.us/ |
| 10 | Chi Mei Corp. | 4.60% | https://www.chimeicorp.com/ |
https://www.kz-opchem.com/organic-peroxides/tertial-butyl-peroxybenzoate.html
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