StellarStack closes tens of millions yuan angel round for industrial LPBF 3D printing

StellarStack (叠序宇宙), a Chinese industrial 3D printing startup, has completed a tens of millions yuan angel round, the company announced on April 28, 2026. The funding will be directed toward core technology iteration, commercial team expansion, and market penetration in high-value verticals including commercial aerospace, robotics, and precision electronics. StellarStack focuses on selective laser melting (SLM/LPBF) of titanium alloys and superalloys, positioning its technology as a core machine tool for smart manufacturing rather than a niche prototyping process.

The company's strategy reflects a deliberate shift away from chasing large, established customers in favor of partnering with early-stage tech firms in commercial aerospace, embodied AI, and new energy vehicles — a playbook that mirrors the "companion growth" model seen in other Chinese deep-tech startups. This approach targets the aerospace qualification grind pattern, where StellarStack aims to embed its LPBF systems into the supply chains of emerging satellite and launch vehicle builders before incumbents can lock in. The funding also signals growing investor appetite for Chinese AM hardware startups that combine cross-disciplinary engineering talent — StellarStack's team spans additive manufacturing, AI vision, and internet technology — with a clear vertical focus, differentiating from broader-scope competitors like BLT or Farsoon.

For StellarStack, the immediate execution challenge is converting its angel capital into qualified production references within 12–18 months, particularly in commercial aerospace where certification cycles are long and switching costs high. The company's stated focus on "pressing hardware" components and satellite structures is a credible starting point, but it will need to demonstrate repeatable part quality and build a service ecosystem around its machines to avoid being seen as just another LPBF hardware vendor in a crowded Chinese market. The round is a vote of confidence in the team's thesis, not yet proof of commercial traction.