fume extractor (fume exhaustor, gas extractor):Many different kinds of products are available,high quality,

                    fume extractor

1. Joint:high grade pp,to be   360 swiveled,dismantled&assembled for cleaning

2. Guiding ring :low-friction treated rubber

3. Center botel :304  stainless steel

4. Damper :  to manually adjust air flow with  a konb

5. Done/cup hood: high grade pp/pc   

fume hood