China's Guangyin Polymer raises tens of millions of yuan for BCB photoresist

What's the deal? Guangyin Polymer TechnologyDealroom has a profile for this one. Try Dealroom → has raised a strategic investment of several tens of millions of yuan, the company announced in September 2026. Shengke Venture Capital and Wenrun InvestmentDealroom has a profile for this one. Try Dealroom → backed the round.

What's the endgame? Guangyin develops, produces, and sells benzocyclobutene (BCB) photoresists and derivative materials. It says it has localised the full BCB photoresist supply chain in China, drawing on its own core technology.

Why now? The company aims to become a leading BCB materials supplier and to push China's high-performance electronic packaging materials sector up the value chain.

The signal: Localising a niche but critical semiconductor material fits a broader push to build domestic supply chains for advanced electronics — reducing reliance on foreign inputs in a strategically sensitive segment.

Image credit: Generated with Gemini