SANDI Technology

HardwareBeijing, ChinaFounded 1994· One of 1756 Hardware companies tracked by AMPulse

Provides industrial-grade Binder Jetting solutions for metal, sand, ceramic, and wax applications, specializing in large-format systems for the casting industry.

CEO / Founder: Zong Guisheng
Team Size: 201-500
Stage: Active
Total Funding: $25M
Latest Round: Series C
Key Investors: Zhongke Haichuang (CSTC); Chengwei Capital (Become Capital); CICC Capital; Nanning High-tech Industrial Fund; Xizi Capital; Jinke Junchuang; Tenglake Capital; Guojin Capital

Technology & Products

Key Products

SANDY 2.5m 3DP Sand Printer; 3DPTEK-J4000 (4-meter Sand Printer); AFS-500 (SLS Casting Sand/Wax Printer); BJ Binder Jet metal printers; BJ Binder Jet ceramic printers; LaserCore-5300/6000; BJ Metal/Ceramic R-Series (R&D); BJ Metal/Ceramic P-Series (Production); Wax printers; SLS printers; Rapid Manufacturing Services

Technological Advantage

Proprietary Binder Jetting technology for bulk rapid manufacturing; recognized as a national 'Small Giant' enterprise by China's MIIT.

Differentiation

Value Proposition

Enables green manufacturing and digital transformation of the casting industry through high-efficiency, large-format Binder Jetting systems that reduce costs and lead times for complex molds and cores.

How They Differentiate

Leading domestic provider of large-format Binder Jetting systems with a focus on the full-link industrialization of 3D printing for foundries.

Market & Competition

Target Customers

Foundries, casting industry, high-end equipment manufacturers (energy, maritime, automotive).

Industry Verticals

Industrial Casting; MIM; Ceramics; Automotive; Energy; Maritime; Dental

Competitors

ExOne; Voxeljet; FHZL (Guangdong Fenghua); Kocel; Bright Laser Technologies (BLT); Desktop Metal

Growth & Milestones

Growth Metrics

Orders exceeding 40 million RMB for equipment; Series C funding exceeded 100 million RMB / $140M USD; team of 201-500 employees; honored in 2025 AM Quality Products List

Major Milestones

1994: Developed China's first commercialized industrial-grade 3D printer; Acquired Shuanglong Dental Research; Launched 3DPTEK-J4000 4-meter mega-size sand printer; 2023-07: Raised ~$14M investment round led by Zhongke Haichuang and Chengwei Capital; 2025: SANDY 2.5m printer won Foundry Equipment Innovation Award; Completed Series C funding round over $100M; Honored in the 2025 Additive Manufacturing Quality Products List; 2026 target: unmanned factory deployment

Notable Customers

Bonat; Shuanglong Dental Research; Major Chinese Aerospace SOEs; Automotive Foundry Partners

https://www.3dptek.com/en/

Why this company matters

Beijing SANDI Technology occupies a distinctive position as a domestic leader in large-format binder jetting (BJT) systems, focused on the digital transformation of China's casting industry. Founded in 1994, the company traces its heritage to Longyuan, where it developed China's first commercialized industrial-grade 3D printer. Its value proposition centers on reducing costs and lead times for complex molds and cores through high-efficiency, large-format BJT, enabling green manufacturing for foundries.

The company's core technology spans multiple additive processes, including binder jetting for metal, sand, ceramic, and wax, as well as DED-LB and PBF-LB for metals and polymers. A unique composite approach combines 3DP and SLS for high-precision sand casting molds. Key products include the SANDY 2.5m sand printer, the 3DPTEK-J4000 4-meter mega-size sand printer, the AFS-500 SLS casting sand/wax printer, and the BJ Metal/Ceramic R-Series and P-Series for R&D and production. The company also offers rapid manufacturing services.

SANDI serves industrial casting, MIM, ceramics, automotive, energy, maritime, and dental verticals. Named customers include Bonat, Shuanglong Dental Research, major Chinese aerospace SOEs, and automotive foundry partners. The company has been recognized as a national 'Small Giant' enterprise by China's MIIT and was honored in the 2025 Additive Manufacturing Quality Products List. Its strategic moat includes proprietary IP for large-format 3DP sand printing systems and the 3DP+SLS composite sand casting technology, though competition from ExOne, Voxeljet, Desktop Metal, and domestic players like BLT and FHZL remains significant. An open question is whether SANDI can scale its unmanned factory deployment target for 2026 while maintaining cost advantages over global rivals.