Bluetooth Speaker, Bluetooth Earphone, OEM/ODM
Bluetooth Speaker, Bluetooth Earphone, OEM/ODM
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市面上有使用5号干电池的移动电源，价格只需要三十元左右，是不是更合算?
source：本站 date：2015-05-14
以移动电源使用500次循环计算(500次以后剩余70%容量，还能继续使用)，相当于要用1500粒的5号电池，后者使用成本高达3750元。所以，后者不仅使用成本奇高，而且造成严重环境污染。
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