| Cycle | Tier | Qualified producers | |
|---|---|---|---|
| 12 mo | Entry-tier specialty
Commodity HF, standard CMP slurries, i-line resist
|
8–15+ globally | |
| 18–24 mo | Advanced purity / process-locked
UHP HF, NF₃, ArF resist, PAG, spherical silica
|
4–8 globally | |
| 24–36 mo | Critical-node, multi-fab integration
12N HF, EUV CAR, ABF resin, PFPE cooling fluids
|
1–4 at required spec | |
| 36+ mo | Regulated / defense-grade
UF₆ conversion (NRC), HALEU, CNT pellicle
|
2–4 globally. No new entrant qualified in 15+ years (UF₆) |