During the plum rain season in southern China, humid air seeps through every crack; in the heavy rain season in northern China, rainwater beats against doors and windows relentlessly. At such times, system door seal strips become the first line of defense for home moisture and water resistance. High-quality seal strips, such as those made of EPDM rubber, boast excellent weather resistance and sealing performance. When rain strikes, they fit tightly against door gaps like loyal guards, blocking rainwater infiltration, preventing door panels from getting damp and deformed, and avoiding damage to indoor decorations caused by water immersion—keeping the home dry and comfortable at all times.