... JT-HYJ-002 Product features oxygen machine applications1 , low noise , good effect , long life ;2 , using high quality enamel tube ... crack ;3 , E-type structure air pump , long life , good stability , venting large ;4 , the use of high-temperature epoxy ... down from the trachea6 , Origin ABS engineering plastics , high hardness , good finish ;7 , the original CPU control chips , EMC anti-jamming design ...