Back room: Electronic information technology located in Spaces frequented only by service personnel for maintenance, repair, or occasional monitoring of equipment.

Back room：位于那些服务人员进行维护、修理，或偶尔进行设备监控时才去的地方的电子信息技术。

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The drill and petroleum extraction tools test-well is built in room, that not only can ensure that test environment meeting the test request but also is very convenience for equipment maintenance.

整个钻采工具试验井建在专用实验室内，既可保证试验环境符合测试要求，又可极大的方便设备维护。

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This industry business include design, construction and maintenance of clean room, detection and treatment of indoor environment pollution, a variety of clean equipment, air purification products.

行业业态包括洁净室的设计、建造、施工和维护、室内环境污染的检测、治理以及各类洁净设备、空气净化产品等。

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