Use "portiere|portieres" in a sentence

1. A portiere was hanging in front of the door.

2. Except that I like to open my room door for better air flow, so I need to buy a portiere for better privacy.

3. At present, the company launched a new generation of magnet invisible gauze portiere, scroll type shower door, fills the gap in the market.

4. Suggestion: the owner in enough gauze portiere when see the intensity, because in the thickness of the profile has the very big difference.