Volume small, weight light, saves the copper and the steel consumes the material, the electricity efficiency high, a charge may continue the distance long, the hill climbing performance is strong.
体积小、重量轻，节省铜与钢耗材，电效率高，一次充电可续路程长，爬坡性能强。
Electrochemical batteries, lithium ones in particular, are the best option, converting stored chemical energy into electricity with high efficiency and without toxic emissions.
电化学电池，特别是锂电池，成为了最佳选择，因为它们把化学能转变为电能效率很高并且无有毒物质释放。
Low, green waterproof, high temperature, cold new LED lights, the lights of electricity users to reduce costs and create a user greater efficiency.
量少、环保防水、耐高温、耐寒的新型LED灯，该灯减轻用户用电成本，营造用户更大效益。
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