Durable, long life span and low heat loses.
耐用，长寿命和低热量的损失。
Hospital, government building, plaza and other lighting places: long life span and maintenance free.
医院、市政大楼、广场等照明场所：长寿命、免维护。
The specific energy in working state is stable and the life -span is long.
电池比能量高，工作状态稳定，使用寿命长。
Obvious energy saving effect, long life-span and low maintenance cost.
节能效果明显，使用寿命长，维护费用低。
Obvious energy saving effect, long life-span and low maintenance cost.
节能效果明显，使用寿命长，维护费用低。
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