Industrial 3D printing startup StellarStack closes tens of millions RMB angel round for core tech and commercial expansion

Chinese industrial metal 3D printing startup StellarStack (叠序宇宙科技) has closed a tens of millions RMB angel round in April 2026, the company announced. The funding will be directed toward core technology iteration, commercial team expansion, and deepening penetration in targeted high-value markets. StellarStack focuses on SLM (selective laser melting) process technology, targeting titanium alloys and superalloys for applications in commercial aerospace, robotics, new energy vehicles, and precision electronics. The company positions its technology as an industrial machine tool rather than a prototyping tool, and plans to prioritize partnerships with early-stage tech startups over large enterprise demo projects.

This funding event fits the Chinese localization arc pattern (P2), where a domestic entrant builds on established LPBF technology but differentiates through cross-disciplinary team composition — drawing from internet, AI vision, and advanced manufacturing backgrounds — and a stated willingness to iterate without legacy constraints. StellarStack enters a Chinese metal AM market already crowded with established players like Farsoon, BLT, and Eplus3D, but its explicit focus on commercial aerospace and embodied intelligence components targets a demand vertical that is politically accelerated in China. The company's claim of positioning 3D printing as an industrial machine tool reflects a broader narrative shift in Chinese AM, where the government and industry are pushing additive manufacturing beyond prototyping into serial production for strategic sectors. The angel round size, while undisclosed precisely, suggests early-stage validation but not yet the scale to challenge incumbents on production capacity.

For StellarStack, the immediate execution challenge is converting its cross-disciplinary team narrative into repeatable process qualification for aerospace-grade titanium parts. The company's stated strategy of growing alongside startup customers rather than chasing established primes is a pragmatic capital-conservation move, but it also means its reference base will take longer to build. The market will need to see delivered parts, not just positioning, before this angel round translates into commercial traction.