| CATEGORY | PHH | TOYO | POCO | MERSEN | SGL | IBIDEN | |
|---|---|---|---|---|---|---|---|
| Graphite | HK-75 | TKK-4 TTK-5 |
EDM-1 EDM-2 |
ELLOR+50 | R-8710 | - | |
| HK-2 | ISO-63 TTK-50 |
EDM-200 | ELLOR+30 | R-8650 | EX-70 | ||
| HK-15 | ISEM-8 ISO-61 |
EDM-150 EDM-200 |
ELLOR+25 | R-8510 | ED-3 | ||
| HK-6 | ISO-95 | EDM-3 | - | - | ED-4 | ||
| HK-3 | TKK-8 TKK-9 |
EDM-4 | - | - | - | ||
| G330 | - | - | - | - | - | ||
| G347 | - | - | - | - | - | ||
| G348 | - | - | - | - | - | ||
| G458 | - | - | - | - | - |