50x8m vegetable tomato single span PE plastic tunnel greenhouse sale

It is mainly composed by three parts:
1. Hot galvanized steel pipe structure: 25mm/32mm/40mm/50mm/60mm(Thinckness:1.0-2.0mm) steel pipe for choose. 
2. Covering material: 80-200 micron 3 layers extruding film for choose. 
3. Connection accessories: circlip, card slot,clamp,top pressure spring,squeeze film line spring, squeeze film line, insect net, squeeze film clip, roll up device, door angle, anchor, slot-fixed clip, duckbill clip, arch connection pipe.

(1)Cooling Pad and Fan System
(2)Lighting System( philips sodium lamp)
(3)Heating System (water, gas, coal heating)
(4)Ventilation System
(5)Indoor & Outdoor Shading System
(6)Control System
(7)Mobile / Fixed Seedbed
(8)Irrigation & Fertilization System

Greenhouse is Widely used in planting vegetables, flowers, nursery stock and other large-scale production .