multispan film greenhouse overview

Multi-span agriculture greenhouse rebedded parts, ground coustruction work

Greenhouse outside sun shading system,  top roof ventilation system show the following picture:

Sun shading system covering black sun net , sun rate 75%,  

Top roof ventilation , with film rolling up device and rolling pipe.  electric roller

Side wall ventilation system, have manual and electric roller for choose.

You can see film lock channel and lock wire, and pressing film rope in this picture