Glass fiber cloth is a massive supply chain bottleneck - needed for GPUs, ASICs, 800G/1.6T switches.
Nittobo have 90% share in T-glass & 70% in NER-glass. But they don't have enough capacity until mid-2027 to meet the demand.
So demand is going to alternative suppliers.
Most interesting alternatives to Nittobo imo:
1. Taiwan Glass Industry (
1802.TW)
- one of the strongest near-term AI plays imo.
- low-CTE (T-glass equivalent) capacity expansion is on track (mass production ramped in Q1 2026) w/
$NVDA /
$AMD certification.
2. Fulltech Fiber Glass (
1815.TW):
- shifting capacity aggressively toward higher margin T-glass.
- advancing Thailand plant for diversification.
- they benefit from Nittobo's shortage; increase pricing + volume in CCL/substrate supply chains.
3. Nan Ya Plastics (
1303.TW):
- quite an attractive integrated play via their Nittobo partnership.
- 2025 results showed strong AI-driven growth in glass fabrics, IC substrates + CCL (with pricing expansion)
- momentum continues this yr too w/ vertical integration providing direct leverage to server/substrate demand.
4. Nippon Electric Glass (5214.T):
- developing low-CTE fibers w/ client proposals targeted for 2026.
5. Unitika (3103.T):
- IP on producting world’s thinnest glass fabrics
- “Entry into AI semiconductor package substrate market, with mass-production technologies to be established in FY 2025 and full-scale sales from FY 2026.” (Unitika Report 2025).
-
$QCOM visited Unitika to explore production ramps to diversify away from Nittobo.
To me, Unitika seemed most compelling even though they're not pure-play (I have a position):
- asymmetric upside if
$QCOM or other hyperscalers commit to multi-year agreements.
- and since they're so small, it leaves room for expansion beyond 2027 as Nittobo's supply come back online.