pvc duct picture:
It's a square pipe made from pvc material,endurable and comprehensive for using.

pvc duct picture:

1)Our designer consider the product designed simple , recycle and drainage.

2)It's comprehensive using to residential.

3)Resistance high and oxygenation difficult.

4)Broken or deforming or corrosive difficult.

5)According to ISO9001:2000to manage.