Answer: It depends on your substrate material, usage scenario, and operation needs:​
For personal DIY (e.g., mug/phone case customization) with no professional tools: Choose Self-Adhesive Decalcomania paper (no activator required, easy to operate).​
For industrial mass production (e.g., auto parts/toys) needing strong adhesion: Opt for Activated Water Transfer Film (matches activator for wear resistance).​
For light/transparent substrates (e.g., glass cups/resin crafts): Select Transparent-Base Decalcomania paper (no background interference).​
For dark substrates (e.g., black metal/dark plastic): Pick White-Base Decalcomania paper (enhances color brightness, no color penetration).​

Answer: It works on most common materials, but not all. Suitable substrates include plastic, metal, glass, ceramic, wood, and resin. It is NOT recommended for porous materials (e.g., uncoated paper, fabric) or materials that dissolve in water (e.g., some low-density foams). For smooth materials (e.g., polished metal), lightly sand the surface first to improve adhesion.​

Answer: To ensure high-quality pattern reproduction, provide files in AI (vector format), PSD (layered format), or HD JPG (high-definition image format). The minimum resolution required is 300 dpi (dots per inch) – lower resolution may cause blurry or jagged patterns after transfer. For large-size roll paper customization, vector files (AI) are preferred to avoid distortion during scaling.​

Answer: No special equipment is needed for basic use:​
For Self-Adhesive Decalcomania paper: Only need water (room temperature), a soft cloth (to smooth the pattern), and scissors (to cut the paper).​
For Activated Water Transfer Film: In addition to water and a cloth, you need the matching special activator (do not use alcohol or gasoline as substitutes) and a spray bottle (to apply the activator evenly).​
For industrial mass production: You can use roll-fed printers or automatic transfer machines to improve efficiency, but these are optional.​

Answer: The durability depends on the paper type and post-treatment:​
Under normal indoor use (e.g., decorative phone cases, indoor crafts), the pattern can last 1-3 years without fading or peeling.​
For outdoor or frequently used items (e.g., auto parts, water cups), spray a layer of transparent sealant after transfer – this extends the service life to 3-5 years and enhances wear/water resistance.​
Avoid prolonged exposure to strong sunlight or frequent soaking in water (unless sealed), as this may accelerate fading.​

Answer: Bubbles/wrinkles are usually caused by improper operation – here’s how to fix and prevent them:​
Bubbles: Use a soft cloth or a small squeegee to gently press the pattern from the center to the edges, squeezing out air bubbles. If bubbles are small, you can also pierce them with a needle and press to release air.​
Wrinkles: Avoid moving the paper once it touches the substrate. If wrinkles occur, carefully lift the paper (while it’s still wet) and reposition it, then smooth it immediately.​
Prevention: Ensure the substrate surface is clean (no dust/oil) and the paper is fully soaked (but not over-soaked) before transfer.​

Answer: Yes, it is relatively environmentally friendly:​
The base material of Decalcomania paper is water-soluble and degradable, so it does not pollute the environment during use.​
No VOCs (volatile organic compounds) are emitted during the transfer process, unlike spray painting which releases harmful solvents.​
Waste paper (unused or leftover) can be treated as general paper waste – it dissolves in water and does not require special hazardous waste disposal. However, paper with printed patterns is not suitable for recycling (due to ink), so it should be disposed of according to local municipal waste regulations.​

Answer: Yes, it is ideal for photo printing:​
Use White-Base Decalcomania paper for light-colored mugs (to make photo colors brighter) or Transparent-Base Decalcomania paper for clear glass mugs.​
Ensure the photo file is HD (resolution ≥300 dpi) and in JPG/PSD format – this ensures facial details are not blurry after transfer.​
After transfer, let the mug dry naturally for 4 hours, then bake it in an oven at 150℃ for 20 minutes (if the mug is heat-resistant) – this makes the photo microwave-safe and prevents fading when washing.