兆威机电是国内微型传动及驱动系统领域的龙头企业，成立于2001年4月，于2020年12月在深圳证券交易所主板上市。
But e-bikes containing lithium-ion batteries are a newer challenge. "When a battery fails, it doesn't necessarily ignite, it will often produce some off-gases," says Stephen Welch, senior lecturer at the University of Edinburgh's Fire Research Centre. "Those off-gases are toxic and flammable. If they accumulate, you can have an explosion risk."
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