The efficiency of power supply of the electronic product is much higher than that one.您说的句子比较的对象不一样吧？ The power supply efficiency of thiselectronic product isis much higher than that of thatelectronic product . 这样对吗？谢谢你说的对，但如果是非常正式的用语，如和同类，应该用：The power supply efficiency of thiselectronic product isis much higher than that of that one。