"Rational use of electronic products" can be referred to as "responsible usage of electronic devices" in Engpsh.

This phrase comes from the need to reduce waste and protect the environment, as well as to ensure the safe and effective use of these devices.

Here are some examples with their Chinese translations:

"Make sure to turn off your electronic devices when not in use to conserve energy."
Translation: "请确保在不使用电子产品时将其关闭，以节省能量。"

"Only use your phone for essential tasks to minimize eye strain."
Translation: "仅用手机执行必要任务，以减少眼疲劳。"

"Be mindful of the amount of time you spend on your computer, and take breaks to reduce the risk of repetitive strain injury."
Translation: "注意在计算机上的时间，并休息一段时间，以减少重复性损伤的风险。"