General Air damper/louver valve

{"cid":"118493","pid":"22199490","pimg_url":"\/\/img1.tradegrowthhub.com\/1a\/0c\/28bf67440e72\/product\/74727715_s-w400xh400.jpg","name":"General ventilation volume wafer control damper","attrs":{"Price":"Negotiable","MOQ":"1 Piece","Delivery Time":"Negotiable","Brand":"THT"}}

{"cid":"118493","pid":"22199467","pimg_url":"\/\/img1.tradegrowthhub.com\/1a\/0c\/28bf67440e72\/product\/74727604_s-w400xh400.jpg","name":"General Smoke Air Gas Butterfly Fan Carbon Steel Damper Valve","attrs":{"Price":"Negotiable","MOQ":"1.0 Sets","Delivery Time":"Negotiable","Brand":"THT"}}

{"cid":"118493","pid":"22199446","pimg_url":"\/\/img1.tradegrowthhub.com\/1a\/0c\/28bf67440e72\/product\/74727518_s-w400xh400.jpg","name":"General Flange Vent Electric Butterfly Valve","attrs":{"Price":"Negotiable","MOQ":"1.0 Sets","Delivery Time":"Negotiable","Brand":"THT"}}

{"cid":"118493","pid":"22199428","pimg_url":"\/\/img1.tradegrowthhub.com\/1a\/0c\/28bf67440e72\/product\/74727447_s-w400xh400.jpg","name":"General Dust Air Fire Regulator Valve","attrs":{"Price":"Negotiable","MOQ":"1.0 Pieces","Delivery Time":"Negotiable","Brand":"THT"}}

{"cid":"118493","pid":"22199405","pimg_url":"\/\/img1.tradegrowthhub.com\/1a\/0c\/28bf67440e72\/product\/74727358_s-w400xh400.jpg","name":"General Air Ventilation Pneumatic Butterfly Valve","attrs":{"Price":"$29.00(50 - 499 Sets) $19.00(>=500 Sets)","MOQ":"50.0 Sets","Delivery Time":"Negotiable","Brand":"THT"}}