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▲可單獨使用，也可作為前級泵。

can be used alone, and also can be used as prepump.

▲ 可用于真空冶煉、真空焊接、真空澆注、真空干燥、化工制藥、電真空器件等工業。

Can be use in the indusries such as vacuum metallurgy, vacuum welding, vacuum casting, vacuum drying, chemical and pharmaceutical, electric vacuum devices.

▲可在環境溫度5℃-40℃范圍內和進口壓強小于1330Pa的條件下，允許長時間連續工作。

Long continuous work is enabled under the conditions of environmental temperature 5℃-40℃ and inlet pressure less then 1330 Pa.

▲不能抽除含氧過高、有毒的、有爆炸性的、有腐蝕性的、對泵油起化學反應的、含有顆粒塵埃的氣體，也不能用作傳輸泵使用。

Can not be used to extract high oxygen, toxic, explosive, corrosive, chemical reaction responding to pump oil and dust contained gases or used as delivery pump. 

▲在6650Pa到大氣壓的進口壓強下連續工作時間，不得超過3min

The time of continuous work under the inlet pressure of 6650Pa to high atmospheric pressure can be no more than 3 minutes.