There is no fresh air or sunlight to bolster their natural powers of resistance.
没有新鲜空气或温暖阳光加强它们自然的抵抗力。
2
Although the safety electric eye has good resistance to natural light interference, but at the time of installation to avoid strong direct sunlight direct electric eye head.
安全电眼虽然具有良好的抗自然光干扰能力，但在安装的时候也要尽量的避免强烈的太阳光直接直射电眼头。
3
In white and color rubber products, add white in the sunlight, insolation, no crack resistance, don't angry, stretching rate and acid and alkali resistant.