Suzhou Dake JingFeng Pipe Co.LTD is one of the pvc flexible duct manufacturer and suppliers in China . It is a great way to connect two sections of flex duct together. They are perfect for those with smaller, more compact needs. It is designed to seal the connection and create a tight seal that will ensure the integrity of the connection.

https://dakemach.com/product/pvc-flexible-duct/