How do 4S stores remove formaldehyde from new cars?

[DelDawson]

4S stores use the following methods to remove formaldehyde from new cars: 1. Photocrystalline: Photocrystalline is a thermoelectric composite material for vehicle air purification, suitable for in-car pollution control. Since exposure to sunlight can rapidly increase the temperature inside the car, adsorption products may experience desorption. Photocrystalline has a desorption temperature above 100 degrees, addressing the shortcomings of mainstream adsorption materials. In terms of treatment speed, the addition of high manganese oxides enhances its decomposition capability, continuously breaking down harmful substances with strong and fast treatment capabilities. 2. Activated carbon: Activated carbon has strong adsorption properties, effectively absorbing harmful substances like formaldehyde from the air. It is small in size and can be placed anywhere. However, activated carbon has a service life of only 6 months and cannot continue to adsorb once saturated, requiring constant replacement of new carbon packs. 3. Photocatalyst: The photocatalyst removal method uses ultraviolet light to catalyze the decomposition of harmful substances like formaldehyde. Its advantages include no saturation, strong decomposition capability, and no secondary pollution. However, it is important to note that it must be used under sufficient ultraviolet light exposure, as insufficient UV light will weaken its treatment capability.

[SanNevaeh]

I remember when I used to buy new cars at 4S dealerships, their methods for handling formaldehyde were quite reliable. The main approach was ozone disinfection, where they placed an ozone machine in the car and ran it for several hours, allowing the generated ozone to break down the formaldehyde. This method is particularly effective for the plastic and leather materials in new cars. They would inform you in advance to leave the car at the dealership for a day, as the entire process required professional supervision to avoid health risks from residual effects. Ventilation was also crucial—the technicians at the dealership would open all doors and windows for air exchange, sometimes combining it with high-temperature ventilation to heat up the interior and accelerate formaldehyde release before expelling it. I’ve seen them apply photocatalytic sprays, which form a coating that requires light to activate. Formaldehyde in new cars comes from seats or adhesives, and after thorough removal, the odor inside the car was significantly reduced, making me feel more at ease while driving. Afterward, they recommended using the external air circulation mode frequently for ventilation—a simple method, but one that shouldn’t be taken lightly.

[OEli]

As a car enthusiast, I've noticed that 4S dealerships rely on a combination of technologies for formaldehyde removal. Ozone treatment is the core method, where ozone molecules generated by machines oxidize formaldehyde; photocatalytic coatings are applied to dashboards or seats to decompose harmful substances under sunlight exposure; they may also place activated carbon packets to adsorb residual pollutants. This process typically takes 6-8 hours and requires professional operation to ensure safety. From my research, I've learned that high-temperature ventilation is also commonly used, such as heating the car interior on sunny days before opening windows. Personally, adding carbon packets can assist in long-term maintenance. It's normal for new cars to have this issue since materials release formaldehyde, but proper removal protects the interior and brings peace of mind.

[AlessandraDella]

From a health perspective, not removing formaldehyde from a new car is very dangerous, as that odor can irritate the eyes or respiratory tract. 4S stores typically use an ozone machine to disinfect for several hours first, breaking down the formaldehyde structure; then they ventilate to expel the residue. I noticed they choose sunny days for this operation to accelerate the effect. After completion, the car feels fresher, and airing it out by opening the windows becomes easier. New car materials release formaldehyde slowly, so one removal isn't enough—subsequently using the external air circulation more often is safer. Health is the top priority, so I always make sure the store thoroughly removes it before taking delivery of the car.