我厂始建于1993年，现能生产100多个系列800多个规格型号，可用 于爆炸性气体环境和爆炸性粉尘环境的防爆专业厂。

The traffic condition is very convenient. The factory was set up in 1993 and can manufacture more than 100 series products of over 800 types.

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文章阐述了爆炸性粉尘环境、爆炸性气体环境危险区域的范围划定，防爆电气设备的标志、防爆电气设备的选型及爆炸性环境电气线路的设计。

This paper presents the classification of zone for hazardous area, marking for ex electrical equipments, selection of ex equipment and the design on electrical wiring used in explosive atmosphere.

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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。

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.

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