1. Thinner Paint on Electric Vehicles
When we talk about "new" in electric vehicles, it's not just about their innovative power sources. To meet environmental standards, electric cars often use water-based paint, resulting in thinner paint layers compared to traditional gasoline-powered vehicles. This thinner paint is more susceptible to scratches, especially during routine car washes.

2.Complex Finishes and High Repair Costs
Take Tesla, for instance. Many Tesla models feature complex pearl or metallic paint finishes. While these finishes enhance aesthetics and come at a premium price, they can be challenging and costly to repair. If your electric vehicle gets scratched or chipped down to the base coat, restoring the paint to its original condition can be irreversible and expensive. As a result, many car owners opt for PPF to protect their investment and maintain their vehicle's appearance.

Aromatic TPU Base Material:
Contains benzene rings, making it susceptible to external influences and less stable.
Prone to yellowing and aging.
Contains methylene bridges between two benzene rings, which can oxidize easily, leading to yellowing.

Aliphatic TPU Base Material:
Does not contain benzene rings, exhibiting high resistance to yellowing.
Has a much denser molecular structure than aromatic TPU, ensuring a strong bond with the coating.
Reduces the risk of separation, peeling, bubbling, or curling at the edges, providing longer-lasting protective performance.

Check if there are any dust particles or air bubbles in the entire heat insulation film, inspect if the edges and corners are securely adhered, and sit inside the car to see if there are any areas that obstruct your field of vision (especially on the front and side windows).

After applying window films, it's recommended not to roll down the windows for the first 3 days. This precaution is mainly to ensure that the adhesive on the film has fully adhered to the glass. Rolling down the windows too soon could cause the film to peel off.

A heat gun is used when applying window films primarily because during the production of security window films, the direction of the electroplating process is fixed. As a result, when these films are heated to take their final shape during installation, they contract in a specific direction. To minimize the risk of air bubbles creating creases, it is essential to squeegee the film in the same direction as its contraction.

Unlike phone screen protectors, automotive window films are applied on the inside of car windows. This interior placement protects them from exposure to wind and rain, ensuring their durability over time. However, sunroof films are typically applied on the outside. When sunlight first reaches the film's surface, heat is effectively reflected, enhancing its heat-blocking capabilities.

1. Different Primary Functions:
Paint protection film (PPF) primarily focuses on protecting the vehicle's paint, emphasizing "protection."
Color change film, on the other hand, is used to alter the vehicle's color and appearance, emphasizing "color."

2. Different Material Composition:
The main material of mainstream paint protection film is Thermoplastic Polyurethane (TPU), classified chemically as "rubber." Structurally, PPF consists of a topcoat, base material, and adhesive layer.
Color change film is predominantly made of Polyvinyl Chloride (PVC), classified chemically as "plastic." Structurally, it includes a colored layer, base material, and adhesive layer, making it suitable for color alterations.

3. Significant Performance Differences:
Paint protection film has a TPU base material known for its safety and environmental friendliness. It features a top nanocoating layer that provides benefits like heat repair (scratch self-healing), corrosion resistance, and strong puncture resistance.
Color change film has a PVC base material, which can release toxic substances when exposed to prolonged sunlight. Its top layer is a color coating that lacks self-repair capabilities, has lower flexibility, and offers no protection against scratches. Over time, its color can fade under UV exposure.
It's worth noting that color change films with TPU material exist, but they are typically limited to single colors, while PVC-based films offer a wide range of vibrant colors without such restrictions.

1. Adhesive Layer Test: Use your finger to press the film with the adhesive layer exposed on the outside. Repeatedly tap it on the vehicle's surface to check if the adhesion decreases or if the adhesive layer peels off. High-quality TPU materials are typically paired with good adhesive layers, which can withstand these actions up to 50 times without affecting their performance.

2. Stretch Test: TPU material is noticeable for its resilience when stretched, and it can return to its original shape. PVC, on the other hand, has poor stretch resistance.

3. Burn Test: PVC and TPH have poor heat stability, and burning them will result in obvious discoloration and odors. TPU materials can maintain their performance even after brief exposure to fire; they don't ignite, change color, and can even return to their original state.

4. Key Scratch Test: PVC is quite rigid and lacks self-healing properties. TPH is relatively thin, while TPU has strong resilience. You can feel the difference when scratching them with a key. Moreover, TPU can self-repair scratches and return to its original state with heat.

Paint protection films are available in various materials, including:

PVC (Polyvinyl Chloride): PVC-based paint protection films are a traditional option. PVC is a type of plastic material. While it offers some level of protection, it can be relatively rigid, and the quality may vary. Lower-quality PVC films can potentially damage a vehicle's paint. These films typically have a lifespan ranging from several months to one or two years.

TPH (Thermoplastic Elastomer): TPH materials are another choice for paint protection films. They incorporate plasticizers to enhance flexibility. TPH-based PPFs are more flexible than PVC but can still be somewhat brittle. They may leave adhesive residue on the paint surface over time, resulting in issues like ghosting or adhesive marks. The lifespan of TPH-based PPFs usually falls in the range of two to three years.

TPU (Thermoplastic Polyurethane): TPU is a highly regarded material for modern paint protection films. It is a thermoplastic polyurethane known for its excellent physical properties and chemical stability. TPU-based PPFs offer superior flexibility, durability, and protection. They are also environmentally friendly. TPU films are highly flexible, have excellent thermal repair capabilities, and are considered the best choice for long-lasting protection. TPU-based PPFs can last from 5 to 10 years.

1. Nanometer-level topcoat layer.

2. High-density TPU base material.

3. High hydrophobicity and outstanding thermal repair capability.

The second generation of PPF has seen significant improvements over the first generation. Firstly, the TPU base material has undergone molecular cross-linking treatment, increasing its density and reducing the gaps between molecules. This enhances the physical impact resistance of the TPU base material. Additionally, the topcoat layer is now made of TPU material, ensuring a stronger bond between the topcoat layer and the base material. The topcoat layer also benefits from molecular cross-linking technology, achieving a higher density, even reaching the nanometer level below 0.0001mm. This effectively resists the intrusion of almost all foreign substances in daily environments, ensuring that the PPF maintains a glossy and clean appearance.

Furthermore, thanks to the dense nanometer topcoat layer, the second-generation invisible car wrap boasts a long-lasting mirror effect and enduring hydrophobic properties. The most noticeable effect for customers is the hydrophobic performance of the second-generation PPF. After each rainfall or car wash, the vehicle's surface is covered with pearl-like water droplets, resulting in a brilliant shine after washing, even surpassing the effect of waxing.

The first-generation PPF, due to technological limitations, had topcoat layers with insufficient density to resist the intrusion of tiny external substances into the TPU base material. Therefore, the first-generation PPF required regular maintenance known as "film care." This maintenance involved applying hydrophobic automotive wax to the surface of the film. The wax served to seal the capillaries on the topcoat layer, preventing external substances from penetrating through and reaching the TPU base material.

If there was heavy rainfall or the car was washed several times, this wax could wear off, losing its protective function. As a result, the PPF could become dirty. If left untreated and external foreign materials penetrated the lower layers of the film, the film would lose its luster and turn yellow.

The first layer: Nano coating, also known as thermoplastic polyurethane transparent film, is an elastic polymer used to eliminate dust adhesion, pollution, and surface scratches. This nano coating provides anti-pollution and repair functions for the PPF.

The second layer: TPU substrate. The TPU material is special and highly resilient, capable of stretching and returning to its original shape even after severe deformation. The combination of the first and second layers of the PPF creates the primary function of automatic scratch repair in the next generation of PPFs.

The third layer: Pressure-sensitive adhesive layer, commonly referred to as the adhesive layer, determines whether the PPF leaves adhesive residue when removed. High-quality PPF requires this third layer to have strong adhesion and easy removal without leaving residue. Additionally, there is another layer, usually removed before installation, known as the base adhesive protection film or matte polyester anti-sticking layer protection film. Its main purpose is to protect the third layer's pressure-sensitive adhesive.