Dayun vehicles, largely focused on trucks, scooters, and utility vehicles, often use durable but basic windshield designs that face significant environmental exposure due to their utilitarian applications. In cold climates, frequent temperature fluctuations and rugged use may cause stress cracking, especially if vehicles are parked outdoors overnight or used in snow-heavy conditions. Windshield visibility can be quickly compromised if frost or snow removal is done with abrasive tools. In hot environments, extended sun exposure can deteriorate the rubber seals, leading to leaks and loss of structural adhesion. UV damage may also cause fogging or haze across the glass surface, particularly in vehicles that lack protective coatings. In humid climates, water can enter through compromised seals, resulting in fogging or mildew growth inside the cabin. Dayun owners, especially those using the vehicles for commercial or delivery purposes, should schedule regular inspections, use weatherproof glass treatments, and address any seal damage promptly to maintain driver safety and comfort.