Restocking Theme Evolution — M9 CCL Grade Analysis
2026-04-21 06:30 · 3.8 KB
Time: 06:30
Date: 2026-04-21
Type: Evolve — M9 material specification deep dive
Stocks updated: 3110.T (Nitto Boseki), 3407.T (Asahi Kasei)
Key Finding: M9 is a CCL Material Grade, Not a TSMC Node
M9 is the next-generation CCL (Copper-Clad Laminate) material specification requiring ultra-low dielectric loss tangent (Df <= 0.0007). Nvidia has confirmed M9 adoption for Rubin-era products including 1.6T switches, NVL288 orthogonal backplanes, mass production H2 2026.
Critical: Nitto Boseki NEZ Glass CANNOT Meet M9
| Glass Type | Manufacturer | Df Value | M9 Compatible? |
|---|---|---|---|
| NEZ Glass | Nitto Boseki | 0.001 | NO |
| Q Glass (quartz) | Asahi Kasei | 0.0005 | YES |
| Standard NE | Nitto Boseki | Higher | NO |
Nitto Boseki's NEZ glass achieves Df 0.001 — it falls short of the M9 requirement of Df <= 0.0007. Asahi Kasei's Q Glass (99.9% silica quartz fabric) achieves Df 0.0005, comfortably meeting M9.
Industry consensus emerging: "NEZ from Nittobo has lost, M9 will adopt Q glass."
Impact by Segment — Nitto Boseki Has THREE Glass Businesses
| Segment | Product | Share | M9 Impact | Status |
|---|---|---|---|---|
| T-glass (chip substrates) | Low-CTE for ABF/BT | 90% monopoly | NOT affected | SAFE |
| NE/NER glass (PCB) | Low-dielectric for motherboards | 80-100% | DIRECTLY affected | AT RISK |
| Next-gen T-glass (2028) | CTE 2.0 ppm/C | R&D | N/A | Future |
The T-glass monopoly for AI chip packaging (Nvidia GB200, Apple, AMD) remains intact. This is where the 15-30% CCL price increases are happening. The M9 issue affects the NE/NER PCB motherboard cloth segment.
Thesis Updates
3110.T Nitto Boseki — Conviction: HIGH (maintained, risk noted)
T-glass monopoly remains the core thesis. 90% share, 3x capacity expansion, pricing power. BUT:
- NE/NER segment faces M9 disruption from Asahi Kasei Q Glass
- Long-term structural risk from glass core substrates (Intel, Samsung, TSMC CoPoS pilot June 2026)
- These are separate revenue streams — T-glass is the bull case, NE/NER is the bear case
3407.T Asahi Kasei — UPGRADED to HIGH
Q Glass wins M9 specification for Nvidia Rubin-era products. PE 13.4x with 3.5% yield is dirt cheap for a company that just won the next-gen AI networking material spec. The conglomerate discount now works in your favor — you're getting M9 exposure at a massive discount to what a pure-play would trade at.
Supply Chain Map
`
Raw Materials
Nitto Boseki (T-glass yarn + cloth) -----> ABF/BT Substrates -----> AI Chips (Nvidia, AMD)
Nitto Boseki (NE/NER glass cloth) ---X---> PCB Motherboards (LOSING to Q Glass for M9)
Asahi Kasei (Q Glass quartz fabric) -----> M9 CCL -----> 1.6T Switches, NVL288 (Nvidia Rubin)
Long-term disruption:
Glass Core Substrates (Intel/Samsung/TSMC) -----> Could bypass glass cloth entirely (2028-2030)
`
Risk Watch: Glass Core Substrates
| Player | Status | Timeline |
|---|---|---|
| Intel | 600+ patents, licensing approach | 2028+ |
| Samsung Electro-Mechanics | Mass production target | 2026-2027 |
| Absolics (SK Group) | $75M CHIPS Act, Georgia facility | 2027+ |
| TSMC CoPoS | Pilot line June 2026, glass panels | 2028-2029 mass production |
| Nippon Electric Glass | GC Core, 515x510mm samples | 2026 samples |
Glass core substrates use glass PANELS not glass CLOTH. If widely adopted, they would structurally eliminate demand for glass cloth in substrates. Timeline: 2028-2030 for meaningful volume.
Sources
- NEZ vs Q Glass analysis: globaltechresearch.substack.com
- Nittobo next-gen T-glass 2028: TrendForce
- TSMC CoPoS pilot: TrendForce Apr 2026
- M9 Nvidia confirmation: Longbridge, Digitimes
- Glass core substrates: NEG, 36Kr, Intel