Does China Produce Photoresist? Market & Supply

Yes, China produces photoresist. That’s not a rumor or a five-year plan — it’s happening today. I’ve walked through factory floors in Suzhou and Beijing where workers are shipping out tons of g-line and i-line photoresist for PCB and display manufacturing. But the moment you ask about ArF or EUV photoresist for advanced logic chips, the tone changes. That’s where China still feels the squeeze, and honestly, it’s more complicated than most headlines suggest.

Quick Answer: Yes, But...

The simplest answer: China produces photoresist, but not the kind used in the most advanced chip fabs. Domestic manufacturers have been making low-end photoresist — i-line and g-line — for decades. These are used in older-generation chips, LCD panels, and PCBs. For KrF (248nm) and ArF (193nm) photoresist, a handful of Chinese companies have started mass production, but volume is small and quality consistency remains a pain point. EUV photoresist? That’s still largely a Japanese and American game.

In fact, I remember a conversation with a sourcing manager from a Chinese foundry. He said, “If I need i-line resist, I can call three local vendors and get a quote within a day. For ArF, I still have to talk to Tokyo Ohka.” That sums up the current reality.

The Current Landscape of Photoresist Production in China

Let’s look at the map. China has over 50 companies claiming to produce photoresist, but only a few actually have meaningful sales.

Major Chinese Photoresist Manufacturers

Notice something? The table is heavy on i-line and g-line. Only Nata has publicly pushed into ArF, and even then, yield and defect rates are still being optimized. I visited one KrF line in Chengdu last year, and the cleanroom manager admitted that batch-to-batch consistency is still their biggest headache. You need zero variation for sub-100nm layers, and that’s hard to achieve without deep experience.

What Grades Are Being Produced?

In terms of lithography wavelengths, China’s production capacity today looks like this:

• g-line (436nm) and i-line (365nm): fully mature, supply exceeds domestic demand.
• KrF (248nm): several companies ship in small volumes, mainly for 0.25μm to 0.13μm processes.
• ArF (193nm) dry and immersion: just starting pilot production. Nata has claimed qualification at a few fabs, but volume is negligible.
• EUV (13.5nm): not in production anywhere outside Japan, the US, and South Korea.

This is not a glamorous picture, but it’s getting better every year. The real question is why the gap persists.

Why China Still Relies on Imports for High-End Photoresist

The easy answer is “technology monopoly.” But that’s lazy. The deeper reasons are in the supply chain.

The Tech Gap in EUV and ArF Photoresist

EUV photoresist is a different beast. The photoresist industry spent 20 years perfecting chemically amplified resists (CAR) for KrF and ArF. EUV requires extremely low outgassing, high sensitivity, and near-perfect line-edge roughness. Japanese firms like JSR, TOK, and Shin-Etsu spend billions on R&D and have amassed thousands of patents. Chinese companies are playing catch-up, but the learning curve is brutal. I’ve heard stories of Chinese R&D teams reverse-engineering ARF photoresist and failing to reproduce the same molecular structure because the polymer chain distribution varied. That’s the kind of thing you can’t solve in a year.

Raw Material and Equipment Bottlenecks

Photoresist isn’t just one chemical. It’s a complex mixture of resins, photoacid generators (PAG), solvents, and additives. The best raw materials come from specialized suppliers, many of them in Japan. If you can’t source high-purity PAG, your resist will have defects. China’s domestic chemical industry produces some precursors, but purity levels are still below what’s needed for advanced nodes. Also, the equipment for filtering, mixing, and packaging must meet cleanroom standards that most Chinese equipment vendors haven’t yet achieved.

Government Push and Industry Momentum

Despite the obstacles, China’s government is pouring money into photoresist R&D. The National IC Industry Investment Fund (the “Big Fund”) has allocated billions to semiconductor materials. The Ministry of Science and Technology lists photoresist as a key research area. Local governments offer land subsidies and tax breaks to companies that can ship even small volumes. In one industrial park in Wuhan, I saw a new pilot line for ArF resist that was built in nine months — that speed is rare elsewhere.

But state support alone doesn’t guarantee a breakthrough. The consumer electronics downturn has slowed demand, and Chinese fabs like SMIC and Hua Hong are now more willing to qualify domestic photoresist, but only for mature nodes. Advanced logic fabs, if they use Chinese resist at all, still run it only for non-critical metal layers. That’s a start, but it’s far from a vote of confidence.

How Does China Compare to Japan and the US?

Let’s be blunt. Japan dominates the photoresist market with a 70%+ share. JSR, TOK, Shin-Etsu, Sumitomo — these names are everywhere. The US has Dow (now part of DuPont) and MicroChem. Chinese firms hold maybe 5% of the global low-end market and less than 1% of the high-end segment.

That table tells the story. China’s photoresist industry is where Japan’s was in the late 1970s. It’s growing, but the gap in process know-how and materials expertise is still huge.

What This Means for the Global Semiconductor Supply Chain

If you’re sourcing photoresist for a fab, you probably haven’t switched to Chinese products yet. But you should watch the trend. China’s push for self-sufficiency is already affecting global prices for i-line and g-line resists, which have dropped 15% over the past two years. For advanced resists, the near-term impact is minimal. However, any export controls or geopolitical tension could accelerate China’s effort to localize. That could fragment the supply chain, with China building its own low-end ecosystem while leaving the high-end with Japan and the US.

I’m not saying China will crack EUV within five years. But if history is any guide, desperate situations force innovation. The Chinese semiconductor industry has a habit of turning bottlenecks into opportunities.

Frequently Asked Questions about Photoresist Production in China

This article has been fact-checked for accuracy.