Explosive environment: It is necessary to choose the appropriate level of explosion-proof products, open-air installation or dust should be used more occasions waterproof, dust-proof varieties.
爆炸性环境：必须选用相应防爆等级产品，露天安装或粉尘多场合应选用防水，防尘品种。
This product is non-waterproof, prohibited in the humid, high temperature or place in storage and use of flammable and explosive.
此产品不防水，禁止在潮湿，高温或易燃易爆场所中存放和使用。
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