Based on the features of operation and products used in underground coal mines, the author described the importance and necessity of management of safety signs on products of mine use.
文章在介绍煤矿井下作业特点和煤矿井下用产品特点的基础上，论述了国家对煤矿用产品实行安全标志管理的重要性和必要性。
Is a load generation of high efficiency and energy saving products, and can be used in underground cavern, therefore crushing equipment operation is safe.
是一加载换代的高效节能产品，可用于井下破碎硐室，因此设备运行安稳。
They are widely used in large industrial plants, underground car parks, logistics centers, electronic products, machinery, chemicals, textiles, refrigeration, food, storage, and other fields.
广泛使用在大型工业厂房，地下停车场、物流中心、电子、机械、化工、纺织、冷冻、食品、仓储等领域。
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