Established in 2007 as a subsidiary of Shenzhen eSUN Industrial (a major Chinese 3D printing filament producer), iSUN3D’s core system integrates scanning, diagnostic design, 3D printing and post-processing into a single workflow for custom orthotic insoles, first launched in 2017 and since extended to dental and rehabilitation applications. Its product range covers flexible filaments (TPU-95A, TPU-HS, PEBA-90A), its single-component FlexOne elastic resin, FDM printers (iSUN3D FLX2/FLX4) and LCD/DLP printers (iSUN3D HSL 100/100MAX) built for soft, elastic parts, 3D foot scanners (iFoot, iFeet, iFeet Neo) and gait sensor boards, and eSUN CAD parametric design software for lattice structures. The company markets this stack as a full “design–material–printing–application” flexible manufacturing solution, with footwear (soft-material midsoles/insoles), medical rehabilitation, and orthotics as its primary target industries, and recently showed new elastic-resin and FDM+DLP hybrid solutions at Formnext Shenzhen 2026.