Reference

Process & Materials Library

Surface finish grades, texture families, illumination methods and manufacturing process verticals. Documented once, used across every industry we govern.

01 Process Technology02 LED Lighting03 VDI Surface Finish04 Special / Custom Texture05 SPI Surface Finish06 In-Mold Labeling
01 / 06

Process / Manufacturing Technology

Nine process verticals. Hover to expand a process, click to see its stage sequence.

Pending
Mold Surface
Pending
Texture Engineering
Pending
2K
Pending
Two-Color Rotary Overmolding
Pending
In-Mold Decorative Surface Integration
Pending
Backlit Decorative HMI Integration
Pending
Dead-Front HMI & Hidden Display Integration
Pending
Optical Light Guide & Precision Illumination
Pending
Metallized Chrome Surface Decoration
Mold Surface
Steel block
→
Surface preparation
→
Pre-polish
→
Ready for texturing

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.

02 / 06

LED Lighting

Six ways light is integrated into a moulded surface. Hover to expand a technique, click to read its specification.

Hidden Display
Backlit Graphic
Precision Ring
Linear / Perimeter Guide
Transparent Edge Glow
Ambient Functional Feedback
Hidden Display
Source
Behind surface, centred zone
Guide Type
Dead-front optical transmission
Application
Control surface, status zone
Constraint
Surface thickness must be tuned per zone
03 / 06

VDI Surface Finish

Twelve VDI grades, with the practical texture classification, closest SPI reference, draft guideline and tooling risk we apply when specifying a cavity surface.

VDI 12 Ultra Fine Texture sample
VDI 12
Ultra Fine Texture
Ultra Fine Texture
View full specification →
VDI 15 Fine Texture sample
VDI 15
Fine Texture
Fine Texture
View full specification →
VDI 18 Fine-Medium Texture sample
VDI 18
Fine-Medium Texture
Fine-Medium Texture
View full specification →
VDI 21 Medium Texture sample
VDI 21
Medium Texture
Medium Texture
View full specification →
VDI 24 Medium-Heavy Texture sample
VDI 24
Medium-Heavy Texture
Medium-Heavy Texture
View full specification →
VDI 27 Heavy Texture sample
VDI 27
Heavy Texture
Heavy Texture
View full specification →
VDI 30 Heavy-Medium Texture sample
VDI 30
Heavy-Medium Texture
Heavy-Medium Texture
View full specification →
VDI 33 Coarse Texture sample
VDI 33
Coarse Texture
Coarse Texture
View full specification →
VDI 36 Very Coarse Texture sample
VDI 36
Very Coarse Texture
Very Coarse Texture
View full specification →
VDI 39 Extremely Coarse Texture sample
VDI 39
Extremely Coarse Texture
Extremely Coarse Texture
View full specification →
VDI 42 Ultra Coarse Texture sample
VDI 42
Ultra Coarse Texture
Ultra Coarse Texture
View full specification →
VDI 45 Extremely Coarse Texture sample
VDI 45
Extremely Coarse Texture
Extremely Coarse Texture
View full specification →

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.

04 / 06

Special / Custom Texture

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.

Leather / Hide Grain Organic irregular valleys and raised islands sample
Leather / Hide Grain
Organic irregular valleys and raised islands
Organic irregular valleys and raised islands
View full specification →
Pebble Grain Rounded irregular islands sample
Pebble Grain
Rounded irregular islands
Rounded irregular islands
View full specification →
Fine Sand / Micro Grain Dense random micro-pits sample
Fine Sand / Micro Grain
Dense random micro-pits
Dense random micro-pits
View full specification →
Orange Peel Rounded cellular irregularity sample
Orange Peel
Rounded cellular irregularity
Rounded cellular irregularity
View full specification →
Linen / Fabric Repeating woven structure sample
Linen / Fabric
Repeating woven structure
Repeating woven structure
View full specification →
Technical Mesh / Weave Controlled repeated crossing pattern sample
Technical Mesh / Weave
Controlled repeated crossing pattern
Controlled repeated crossing pattern
View full specification →
Carbon Fiber Style Repeating woven geometry sample
Carbon Fiber Style
Repeating woven geometry
Repeating woven geometry
View full specification →
Wood Grain Organic elongated lines and pores sample
Wood Grain
Organic elongated lines and pores
Organic elongated lines and pores
View full specification →
Stone / Mineral Random mineral or fractured structure sample
Stone / Mineral
Random mineral or fractured structure
Random mineral or fractured structure
View full specification →
Slate / Rock Layered or broken geological pattern sample
Slate / Rock
Layered or broken geological pattern
Layered or broken geological pattern
View full specification →
Brushed / Hairline Long linear grooves sample
Brushed / Hairline
Long linear grooves
Long linear grooves
View full specification →
Geometric Pattern Repeating engineered geometry sample
Geometric Pattern
Repeating engineered geometry
Repeating engineered geometry
View full specification →
Dots / Micro-Dots Repeating discrete points sample
Dots / Micro-Dots
Repeating discrete points
Repeating discrete points
View full specification →
Wave / Flow Pattern Repeating curved lines sample
Wave / Flow Pattern
Repeating curved lines
Repeating curved lines
View full specification →
CD / Concentric Groove Precision circular line pattern sample
CD / Concentric Groove
Precision circular line pattern
Precision circular line pattern
View full specification →
Multi-Gloss Texture Two or more finish levels in one surface sample
Multi-Gloss Texture
Two or more finish levels in one surface
Two or more finish levels in one surface
View full specification →
Layered / Fusion Texture Multiple overlapping texture scales sample
Layered / Fusion Texture
Multiple overlapping texture scales
Multiple overlapping texture scales
View full specification →
Graphic Texture Intentional graphic information sample
Graphic Texture
Intentional graphic information
Intentional graphic information
View full specification →
Custom Brand Pattern Brand-specific geometry sample
Custom Brand Pattern
Brand-specific geometry
Brand-specific geometry
View full specification →
Anti-Slip / Grip Texture Functional raised or recessed geometry sample
Anti-Slip / Grip Texture
Functional raised or recessed geometry
Functional raised or recessed geometry
View full specification →
Tactile Locator Texture Localized functional texture sample
Tactile Locator Texture
Localized functional texture
Localized functional texture
View full specification →
Reptile / Exotic Skin Highly irregular biological pattern sample
Reptile / Exotic Skin
Highly irregular biological pattern
Highly irregular biological pattern
View full specification →
Bark / Natural Organic Random nature-inspired geometry sample
Bark / Natural Organic
Random nature-inspired geometry
Random nature-inspired geometry
View full specification →
Soft-Touch Visual Grain Fine rounded surface sample
Soft-Touch Visual Grain
Fine rounded surface
Fine rounded surface
View full specification →
Heavy Industrial Texture Large irregular peaks and valleys sample
Heavy Industrial Texture
Large irregular peaks and valleys
Large irregular peaks and valleys
View full specification →

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.

05 / 06

SPI Surface Finish

The twelve SPI grades with polishing method, resulting visual character, gloss behaviour and relative tooling risk.

SPI A1 Diamond Polish sample
SPI A1
Diamond Polish
Diamond Polish
View full specification →
SPI A2 Diamond Polish sample
SPI A2
Diamond Polish
Diamond Polish
View full specification →
SPI A3 Diamond Polish sample
SPI A3
Diamond Polish
Diamond Polish
View full specification →
SPI B1 Paper Finish sample
SPI B1
Paper Finish
Paper Finish
View full specification →
SPI B2 Paper Finish sample
SPI B2
Paper Finish
Paper Finish
View full specification →
SPI B3 Paper Finish sample
SPI B3
Paper Finish
Paper Finish
View full specification →
SPI C1 Stone Finish sample
SPI C1
Stone Finish
Stone Finish
View full specification →
SPI C2 Stone Finish sample
SPI C2
Stone Finish
Stone Finish
View full specification →
SPI C3 Stone Finish sample
SPI C3
Stone Finish
Stone Finish
View full specification →
SPI D1 Blast Finish sample
SPI D1
Blast Finish
Blast Finish
View full specification →
SPI D2 Blast Finish sample
SPI D2
Blast Finish
Blast Finish
View full specification →
SPI D3 Blast Finish sample
SPI D3
Blast Finish
Blast Finish
View full specification →

All fields are taken directly from the dedicated SPI Finish tab of the Hongyi Master Workbook.

06 / 06

In-Mold Labeling — Industry Reference

How a pre-printed decorative film looks before molding, and how the same graphic reads once integrated and backlit in the finished part.

Pre-printed film graphics, by industry

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.

Digital Crystal Structure Automotive — door / interior trim sample
Digital Crystal Structure
Automotive — door / interior trim
Automotive — door / interior trim
AI Concept
View full specification →
Faceted Diamond Grid Automotive — door / interior trim sample
Faceted Diamond Grid
Automotive — door / interior trim
Automotive — door / interior trim
AI Concept
View full specification →
Circuit Trace (silver) Consumer Electronics — housing sample
Circuit Trace (silver)
Consumer Electronics — housing
Consumer Electronics — housing
AI Concept
View full specification →
Circuit Trace (blue node) Consumer Electronics — housing sample
Circuit Trace (blue node)
Consumer Electronics — housing
Consumer Electronics — housing
AI Concept
View full specification →

Where do you want to go next

Ready to talk

Start a Structured Discussion

Twenty minutes. No quotation. We assess whether governance is the right fit before anything else.

Explore further

Industries We Govern

See where this reference is applied across the sectors we work in.