Dear Deer - Model EJ-107 -Poly Film Roll Winder

Poly Film Roll Winder for rolling up the down cover film to ventilate or or temperature cool down. Poly Film Roll Winder is for rolling up the down cover film to ventilate or or temperature cool down. While greenhouse must keep warm Film Roll Winder is for reverse rolling down to cover the wall of greenhouse. The wall inside must to set insect prevent net to prevent insects while the film is rolled up.