Can business cards that slipped into the car window be left inside?

[DelNadia]

Business cards that slipped into the car window can generally be left inside, as they usually don't significantly affect the window. However, if too many cards accumulate, they may interfere with the window's operation and door lock switches. Below is some relevant information about car windows: 1. Types: Car windows are typically categorized into four types: front and rear windshields, ventilation windows, heat-insulating side windows, and sunroofs. 2. Composition: Most automotive glass is made of silica glass, with silicon dioxide content exceeding 70%, and the remainder consisting of sodium oxide, calcium oxide, magnesium, etc., produced through the float glass process. Finished automotive glass should have no visible bubbles or scratches.