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After sales maintenance
Product Comparison—Superior Performance, Authoritative Certifications
■ The production process of the Starry Sky Film, known as the "King of Films," is more advanced and durable.
■ Light sources are more environmentally friendly, healthy, and diverse.
■ Has significant advantages in craftsmanship, personalization, after-sales service, and other aspects.
| Comparison Item | Membrane Zun Starry Sky Membrane | Competitor A | Competitor B | Remarks | |
|---|---|---|---|---|---|
| Product Parameters | Input Voltage | DC12V | DC12V | DC12V | |
| Service Life | >10 years | <2 years | <1.5 years | ||
| Operating Temperature | -40℃~120℃ | -20℃~75℃ | -10℃~70℃ | ||
| Screen size | Full screen display | Full screen display | Full screen display | ||
| Process Technology | Design Patterns | Multiple classic patterns | Single fixed pattern | Single fixed pattern | |
| Film Manufacturing | Coating printing | Engraving | Flat printing | Coating resists moisture | |
| Light Source | RGB LED | UV | UV | UV harms skin/retina | |
| Luminous mode | Multi color variation | Monochrome (purple blue) | Monochrome (purple blue) | Colorful changes, more highlights and competitiveness. | |
| Standards & Warranty | Automotive-grade | Non-automotive | Non-automotive | ||
| Warranty | 3 years | 1 year | 1 year | Nationwide electronic warranty | |
| Certification | CQC、ECE、FMVSS | none | none | International recognition, quality assurance | |
| Applications | All models | Partial models | Partial models | ||
Product Comparison—Star Track Light Curtain
Product details
■ Membrane: Graphene superconductor
■ Gold-platinum reflective layer (daily supply)
■ BMW automotive-grade connection, on-site cutting for damage-free plug-in
■ Vehicle-specific membrane, no cutting needed
■ Ambient light synced with original factory screen
■ Matches original dual colors & all factory modes
■ Connects to original co-pilot footwell light; easy install, no extensive disassembly
■ Adhesive: Graphene superconductive + Henkel glue (no residue, easy to apply, high transparency, high/low temperature resistance)
■ Membrane: Invisible, fully transparent (no daytime traces, no brightness loss)
■ Graphene penetration tech for high brightness; uniform light, no dark areas in patterns
our company（Uniform emission without dark areas）
others（Uneven brightness and dark areas in the middle of the film）
Product Comparison—Craftsmanship
■ Better durability
■ Stronger UV protection
■ More environmentally friendly
| Item | Coating Printing | Flat Printing or Engraving |
|---|---|---|
| Process Description | Under computer control, uniform pattern distribution is formed via coating printing machine technology, improving productivity and product perfection. | After the light guide plate is processed into shape, dots are printed on the reflective surface, which are dots attached to the material surface. |
| Reflection Unit | Pattern distribution surface | Flat bumps |
| UV Resistance | Strong | Weak |
| Surface Illuminance | 20% higher than flat printing and engraving | — |
| Uniformity | Over 90% | About 75% |
| Light Transmittance | Over 98% | About 85% |
| Yellowing Rate | No yellowing | Over 5% |
| Membrane Thickness | 0.17mm | 0.5mm |
| Service Life | 5-8 years | 2-3 years (ink deteriorates when damp) |
| Quality | Never fades | Fades gradually |
| Environmental Friendliness | Pollution-free | Ink is easy to fall off |
| Shape | Can be cut into any shape | Fixed shape |
Unique Product Technologies
Adopting advanced technologies from multiple fields:Material Technology,Optoelectronic Technology,Coating Technology,Superconducting Mapping Technology
■ Graphene superconductor
■ Gold-platinum reflective layer
■ Patented contactless design
■ Intelligent voice control patent
■ Dedicated light source
■ Power-on mapping display
■ HanGao glue (no residue, high transparency)
■ Ion strong wind dust removal
■ Secondary deep fusion
■ Uniform light distribution, no dark areas
■ Breathing light effect
■ Embedded software logic program
Unique Product Technologies-Other companies
Other companies
1. Contactless (patented) cable: easy to install, sleek and elegant.
2. No after-sales issues compared to traditional contacts.
3. Never inconsistent lighting colors between front and rear membranes.
4. Membrane stays lit when front window is opening/closing.
Our company
1. Complex installation, hard to fix in place.
2. Damaging installation, affecting aesthetics.
3. Prone to shifting due to high temperature, vibration or frequent front window operation.
4. Poor contact, sunroof abnormal noise.
5. Corrosion of copper contacts may cause short circuits.
Product Composition
| Serial Number | Name | Material |
|---|---|---|
| 1 | Back glue | Double-layer back glue |
| 2 | Light guide membrane | Polymer composite material |
| 3 | Light strip | PCBA |
| 4 | Wire harness | - |
| 5 | 3M tape | GT7108/GT7112 |
| 6 | Press strip | EPDM |
| Serial Number | Name | Material |
|---|---|---|
| 1 | LED | RGB three-color LED |
| 2 | Gear resistor | - |
| 3 | Resistor | - |
| 4 | PCB | FR-4 |
Product Testing—Quality Verification, Technical Certification
Hardness Test
■ According to Japanese Industrial Standards (JIS K 5600-5-4, load capacity 750g)
■ 4H (JIS K5600-5-4)
■ 1-2x harder than competitors
UV Resistance Test
■ Blocks <380nm UV
■ High visible light transmittance
Aging Test
■ Under extreme automotive environment aging tests, polymer composite materials can effectively solve the yellowing problem.
Remark：The purple thread is a composite material on the market，the green line represents polymer composite materials
Experimental Equipment—Process Inspection
■ Program detection equipment: Tests current, LIN signals, scans codes for detection (results are automatically recorded for traceability), and alarms when abnormalities occur.
■ Brightness detection equipment: Automatically measures the highest and lowest brightness areas at fixed positions on the direct-illumination surface; automatically calculates the uniformity of brightness/color at fixed positions on the direct-illumination surface.
■ Imaging detection equipment: -
■ Illuminance detection equipment: -
Laboratory Qualifications
■ The laboratory has passed GM GP10 certification and national CNAS certification.
■ Capabilities include: daytime running light light distribution performance test, assembly brightness and color coordinate test, integrating sphere spectral analysis, EMC electrical test, GMW14906 exterior light environment test, GMW3172 automotive light environment test, GMW14650 exterior light plastic test, etc.
Applicable Models
All models with sunroofs of various brands.
