Common Questions

Our products mainly serve three user groups: 1) Professional auto body shops and car beauty shops; 2) Car wash and detailing studios; 3) DIY car enthusiasts. We provide a full range of product solutions from professional equipment-compatible compounds to simple hand-application products, meeting the needs of users at all skill levels.

Equipment requirements vary by product. J1 3-in-1 Cleaning Wax can be applied by hand, ideal for daily paint maintenance. J2 Water-Based Polishing Compound and J5 Mirror Finish Restorer are recommended for use with a polishing machine (DA or RO), paired with wool pads or foam pads.

All products have a 3-year shelf life. Store in a cool, dry place, away from direct sunlight and high temperatures (above 40°C will affect product performance). Always reseal containers tightly after use to prevent solvent evaporation and thickening. Protect from frost during winter.

Yes, we support wholesale procurement with exclusive services for bulk orders. Shop owners can apply for regional distributor status. Contact us at +86-18923492297 or via WeChat for details.

You can access tutorials through: 1) Follow our Douyin account 'DianYe Auto' for regular product tutorials and application demo videos; 2) Visit the Tutorials section on our website; 3) Contact us directly for detailed technical documents. We also offer on-site training for professional users.

All DianYe products use eco-friendly formulations. J2 uses a pure water-based formula with no organic solvents and no irritating odor. J1 and J5 also use low-VOC formulas that comply with China's GB/T standards. We recommend ensuring ventilation during use, avoiding prolonged skin contact, and washing hands after application.

The core difference is the solvent system: solvent-based compounds use organic solvents (mineral oil, silicone oil) with harsh odor and potential masking effect; J2 uses a pure water-based eco-friendly formula with no organic solvents, relying on physical abrasive cutting. Key advantages: 1. No masking, no paint bounce-back, restores true paint condition; 2. Eco-friendly with no harsh odor; 3. ~30% higher cutting efficiency; 4. Easy cleanup with water.

J2 works on all automotive paint types, including: 1) OEM factory paint: new car prep, old car restoration; 2) Refinished paint: orange peel removal, flow leveling after spraying; 3) All vehicle brands: German (VW, BMW, Mercedes), Japanese (Toyota, Honda, Nissan), American (GM, Ford), Chinese (BYD, Geely, Great Wall), etc. Applications include scratch removal, oxidation layer removal, and paint restoration.

J2 targets light to moderate paint defects: 1) Swirl marks (hairline scratches): excellent results, typically eliminated in 1-2 passes; 2) Light scratches (depth < 0.02mm): significant improvement, 90%+ removal; 3) Moderate scratches (depth 0.02-0.1mm): visible improvement when paired with a wool pad; 4) Deep scratches (primer exposed): cannot be removed by polishing alone — touch-up paint first, then use J2 for surface blending.

Durability depends on environment and aftercare: 1) Indoor/garage parking: 6-12 months; 2) Outdoor parking: 3-6 months; 3) Harsh environments (industrial areas, coastal regions): 1-3 months. Regular washing and avoiding acidic contaminants also help extend results.

J2 and J1 serve different purposes and should not be applied simultaneously to the same area: 1) Deep correction (scratches, oxidation): use J2 for cutting; 2) Daily maintenance: J1 alone is sufficient.

Key safety measures: 1) Wear safety glasses to prevent abrasive splatter; 2) Ensure adequate ventilation; 3) Never polish in direct sunlight or on hot paint (target 15-25°C paint temperature); 4) Keep the pad lubricated with product — dry polishing generates excessive heat and can cause new scratches; 5) Limit each section to 30 seconds; 6) Wipe residue immediately with a clean microfiber towel.

Recommended settings: 1) Machine type: Rotary (RO) polisher; 2) Speed: 1500-1800 RPM; 3) Pad: Wool pad for heavy cutting, foam pad for fine finishing; 4) Product amount: 2 pea-sized dots per section; 5) Working time: 20-40 seconds per section; 6) Pressure: Light to moderate, never force it; 7) Temperature: 15-30°C for best results.

J1 combines three functions in one product: 1) Cleaning — mild abrasives and surfactants effectively remove bird droppings, tree sap, bug residue, and oxidation; 2) Shining — enriched with Brazilian carnauba wax and polymer gloss enhancers for immediate mirror-like shine; 3) Protection — deposits a thin protective film that resists UV, oxidation, and water spotting. One application replaces a traditional 3-step process.

J1 suits various scenarios: 1) Daily maintenance: 1-2 times per month to keep paint glossy; 2) Pre-show preparation: quickly enhance vehicle appearance; 3) Used car restoration: remove light oxidation, restore shine; 4) Pre-polish prep: remove surface contaminants for better polishing results; 5) After rain: remove water spots and stains. Ideal for DIY users who don't want to invest in professional equipment.

J1 fully supports hand application with no special equipment needed. Recommended tools: 1) Basic: microfiber towel; 2) Upgraded: hand wax applicator pad; 3) Professional: small polishing machine (optional). Hand application method: apply product to towel or sponge, wipe across paint surface, then buff with a clean towel until shiny.

They serve different purposes: 1) Car wash soap: mainly removes surface dust, mud, and water-soluble dirt; pH-neutral, won't damage paint; 2) J1: adds abrasive cleaning (removes oxidation, stubborn stains) and shine/protection functions on top of cleaning. Simply put: car wash soap is daily cleaning, J1 is deep care. We recommend washing weekly and using J1 once or twice a month for deep maintenance.

J1 is designed for exterior paint surfaces. Not recommended for: 1) Interior plastic trim (may leave greasy residue); 2) Leather seats; 3) Glass (will leave oily film); 4) Rubber trim (may turn white). For interior cleaning, use a dedicated interior cleaner. J1 can be used on: body paint, bumpers, headlight housings (plastic), wheels (metal).

The car can be washed with water immediately after J1 application.

J5 is a professional fine finishing product, positioned after cutting and before protection in the polishing workflow. Its role: 1) Remove micro-marring and buffer trails left by the cutting step; 2) Eliminate swirl marks and holograms; 3) Refine the surface to a true mirror-level gloss. Complete workflow: J2 cutting → J5 mirror finishing. J5 is the critical link between cutting and protection — skipping it means cutting marks will show through in the final result.

They serve different purposes: 1) J2 Water-Based Polishing Compound: strong cutting power for moderate scratches, oxidation, orange peel — the heavy cutting step; 2) J5 Mirror Finish Restorer: finer abrasives for final finishing, removing cutting residue and swirl marks — the fine polishing step. Best results come from using both: J2 levels the surface, J5 refines it to a mirror. J5 alone can handle light swirl marks, but moderate defects require J2 first.

Recommended setup: 1) Machine: DA (dual action) or RO (rotary) polisher; 2) Pad: fine foam finishing pad (black or blue soft pad) — do NOT use wool pads (too aggressive for finishing); 3) Speed: 600-800 RPM, lower than cutting speed; 4) Towel: clean microfiber for residue removal. Beginners should start with a DA polisher — safer and less likely to damage paint. RO is faster but requires more skill.

Recommended settings: 1) Speed: 600-800 RPM; 2) Pad: fine foam finishing pad; 3) Product amount: 1 pea-sized dot per section; 4) Working time: 20-30 seconds per section; 5) Pressure: very light, no force needed; 6) Temperature: 15-30°C. Method: spread J5 evenly, work at low speed with steady overlapping passes, then wipe clean and inspect. Repeat if needed for desired gloss. Avoid prolonged work on one area.

After J5 refinement, apply protection to lock in the results: 1) Apply a solid wax for protection and added depth; 2) Or use a paint sealant or ceramic coating for longer-lasting protection. The surface after J5 is perfectly clean and smooth — the ideal moment for protection. Note: don't leave the freshly refined surface unprotected — apply protection within 24 hours and avoid rain exposure before sealing. Maintain regularly with wax.

J10 addresses: 1) Oil film: water spots, hazy oil film, kitchen grease contamination; 2) Light scratches: wiper marks (depth < 0.1mm), fingernail marks, car wash scratches; 3) Oxidation film: hazy buildup from long-term neglect; 4) Bird dropping etching: light etching can be partially repaired; 5) Tree sap and bug residue. Not suitable for: deep scratches (significant tactile feedback), cracked glass, or laminated glass internal issues.

Glass polish has limited effectiveness on depth: 1) Light scratches (barely visible but tactile): repairable; 2) Moderate scratches (visible but not deep into glass): 60-80% improvement; 3) Deep scratches (clearly felt, can insert a fingernail): cannot be fully repaired — glass replacement needed. Test: run your fingernail across the scratch; if you feel a distinct catch, it's likely beyond repair. Glass has limited thickness — over-polishing can cause optical distortion.

Recurring oil film has underlying causes: 1) Worn wiper blades — replace them first, old rubber continuously deposits residue; 2) No glass protection — apply a glass coating for a protective layer; 3) Low-quality washer fluid — switch to a reputable brand; 4) Environmental factors — industrial areas, restaurants nearby. Prevention: clean glass regularly with dedicated glass cleaner, avoid parking under trees, and maintain a protective coating after J10 treatment.

The front windshield can be polished, but with caveats: 1) Windshields are laminated glass — only polish the outer surface; 2) Control polishing intensity to avoid optical distortion that affects driving visibility; 3) Wiper contact areas need extra attention — uneven wiper arm pressure causes inconsistent material removal; 4) If uncertain, consult a professional. Front windshield work directly impacts driving safety — when in doubt, seek expert help.

When used correctly, J10 will not damage glass. However, improper use carries risks: 1) Over-polishing — holding too long on one spot causes surface depression and optical distortion; 2) Recommended limit: maximum 30 seconds per section, then check results; 3) Heat management — avoid polishing hot glass, heat accelerates abrasive action unpredictably; 4) Thorough cleanup — rinse completely after polishing. Always test on a small area first.

Different areas need different considerations: 1) Side mirrors — glass surface is safe to polish; 2) Sunroofs — can be polished, but protect the rubber seal edges from abrasive contact; 3) Tinted glass (some rear windows) — use with caution, the tint coating may be damaged; 4) Coated glass — not recommended, polishing will strip existing coatings. Always identify the glass type before polishing and test in a small area.