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Instrument and meter
Domestic quartz cotton HW990716A+50 Beijing Huawei Shengjia Technology (1-3 microns)
Domestic high-quality quartz cotton HW990716C+50 Beijing Huawei Shengjia Technology (5-10 microns)
Domestic high-quality quartz cotton HW990716B+50 Beijing Huawei Shengjia Technology (3-5 microns)
Successful operation!