Rasta focuses on ventilation systems, with current material covering livestock negative-pressure ventilation, rooftop ventilation, and greenhouse / HVAC applications. Final model selection depends on airflow, static pressure, speed and installation conditions.
Node size reflects the weight of available evidence, not market size. Livestock ventilation is the only line with factory-measured data.
The number inside each node is how many measured data points exist: four static-pressure points for livestock, none for roof or for greenhouse / HVAC. Roof ventilation has a selection band agreed across both legacy sites — hence the solid node — but no measured data; greenhouse and HVAC have neither, hence the dashed one.
01Measured data available
Built around the continuous-duty needs of livestock ventilation.
C
02Selection basis only
Integrated drive control for simpler rooftop ventilation systems.
B
The legacy site carried five application categories: axial fan, roof fan, centrifugal fan, metering pump and water pump. The body text of the last three all reused the same 58-inch livestock axial fan case and test table — and so did their English counterparts.
So "five categories" did not mean "five sets of usable content". Those three directions have no duty data, photography or results of their own; separate pages would only display the same content three times. They become equipment options in the selection form instead, to be promoted to full pages once real duty material exists.
Equipment options moved into the form
