
Surface finish grades, texture families, illumination methods and manufacturing process verticals. Documented once, used across every industry we govern.
Nine process verticals. Hover to expand a process, click to see its stage sequence.
Before any texture is applied, the cavity steel itself is prepared and pre-finished. This base surface quality determines how well any later texture will replicate.
Six ways light is integrated into a moulded surface. Hover to expand a technique, click to read its specification.
Twelve VDI grades, with the practical texture classification, closest SPI reference, draft guideline and tooling risk we apply when specifying a cavity surface.












Practical Texture Classification, Coarseness Index, Closest SPI Reference, Draft Guideline, Applications, Finish Tier and Tooling Risk are consolidated from the Hongyi Master Workbook. Ra Value is a nominal reference figure pending certified lab verification.
Twenty-five texture families at concept level, each documented against the full twelve-field reference: sub-types, pattern character, directionality, depth, draft sensitivity, manufacturing method, visual and tactile effect, design intent, applications, tooling considerations and repair difficulty.

























All 12 fields are taken directly from the dedicated Special Texture tab of the Hongyi Master Workbook, a conceptual family-level reference, distinct from photographed physical plaque samples.
The twelve SPI grades with polishing method, resulting visual character, gloss behaviour and relative tooling risk.












All fields are taken directly from the dedicated SPI Finish tab of the Hongyi Master Workbook.
How a pre-printed decorative film looks before molding, and how the same graphic reads once integrated and backlit in the finished part.
These are AI-generated concept illustrations showing the design principle, not physical Hongyi JIG samples or client work. Real photographed reference samples for VDI, SPI and Special Texture are documented separately above.




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