Orion machinery Shanghai Co., Ltd.   

        since there is no oil type so the use of vacuum, exhaust of the case does not contain oil, not to the working environment or product (object) caused by oil pollution.

        - the sound operation of low (due to high cycle to remove make people feel tired of Boeing, even under the same dB value, harsh voice rarely).

        - long service life.

        - is also equipped with a vacuum pressure gauge, pressure regulating controller.

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