Rack & pinion is used for the greenhosue ventilation system. It featured with high precision, low noise, high intensity, particular technics and heat treatment with longlife. Both straight and arc rack at different thickness are available.

1, Applied for greenhouse ventilation system and sun shading system 

2, Length for the ventilation rack : 1000mm-2000mm and size to buyers' requirements

3, Length for the sun shading rack

4, traight rack and cueved rack for the greenhouse ventulation 

Metalic rack and pinion for greenhouse 
1),For greenhouse ventilation 
2),Easy to operate 
3),Automatic control