Zhen Ding posts record September sales on mobile demand and AI applications

Zhen Ding's record NT$26.4B monthly revenue is not a seasonal mobile spike—it is the signal that AI compute infrastructure has breached the PCB and IC substrate layer. Simultaneous order growth in optical modules and advanced packaging substrates confirms that CoWoS-class 2.5D interconnect capacity is now the binding constraint on AI chip shipment, pushing the bottleneck upstream into material supply. Risk vector: production concentration in Taiwan, China creates a single-point-of-failure exposure. If Washington extends entity-list restrictions to advanced IC substrates, server and optical-module customers face immediate lead-time disruption. Unimicron and Japan's Ibiden are already qualifying Southeast Asian backup lines; a price war could surface as early as Q1 2027. 12-24 month trajectory: if hyperscaler capex sustains current growth, high-end substrate supply tightens again in 2027. Conversely, a deceleration below 15% YoY would leave H2-2026 capacity additions sitting idle for three to four quarters. Zhen Ding's durable moat is not wafer capacity—it is the co-design lock-in with top-tier OSAT partners. That relationship, not square footage, is the real long-tail barrier to entry.