Doosan Commits 970 Billion Won to CCL Expansion as AI Semiconductor Demand Surges

The Quick Take

• Doosan is investing 970 billion won over three years to dramatically expand CCL production capacity, targeting AI accelerator and optical module demand
• Korea receives 420 billion won for optical-module CCL lines where quality and IP protection are paramount, while China gets 550 billion won for AI accelerator and network switch substrates
• Doosan's electronics unit already exceeded 1 trillion won in annual revenue in 2024, and the company says this investment aims to secure market leadership as AI data center demand accelerates

Doosan, the Korean industrial conglomerate, announced a record 970 billion won capital investment in copper clad laminate production to capitalise on surging demand from AI data centers. CCL is the critical substrate layer in printed circuit boards used in AI accelerators, network switches, and optical modules—components that sit at the heart of every large-scale data center build-out. The three-year investment programme, running through 2028, positions Doosan as a scaled provider in a market where supply tightness has been a persistent constraint for hyperscalers.

The geographic allocation of the investment reflects deliberate strategic logic. The 420 billion won earmarked for Korean facilities focuses on optical-module CCL, a product where process precision and intellectual property protection are paramount and where proximity to Samsung Electro-Mechanics and other tier-one customers provides a logistical advantage. The 550 billion won Chinese facility, by contrast, targets AI accelerator and network switch CCL, co-locating production with global PCB manufacturers concentrated in China's Pearl River Delta who prefer local sourcing for just-in-time inventory management.

Investors should watch whether Doosan secures binding volume commitments from AI accelerator customers before the China facility reaches commissioning, given that a softening in hyperscaler capex plans could pressure utilisation rates. The optical-module market is the cleaner risk-reward given domestic Korean demand anchors; the AI accelerator side is exposed to US-China trade dynamics and the concentration of Chinese PCB makers who could face tariff or sanctions headwinds that either benefit or pressure Doosan's positioning.

Synthesized from 3 sources.