What is the qualified light transmittance for car window films?

[Riley]

Car window films with a light transmittance of 70% or higher are considered qualified. These films are applied to the interior side of car windows, including the front windshield, rear windshield, side windows, and quarter windows. The steps for applying car window films are: 1. Place bath towels on the hood and dashboard; 2. Cover the seats with seat covers and secure them with cling film; 3. Thoroughly clean the glass; 4. Position the soft template over the window glass by sliding it into place, then cut the film according to the template. The functions of car window films include: 1. Blocking infrared heat to achieve heat insulation and sun protection; 2. Filtering out most UV rays to prevent skin damage and reduce aging of car interiors; 3. Preventing injuries to passengers from shattered glass in case of accidents; 4. Reducing the occurrence of accidents caused by glare.