Rainwater pipes with diameters of 28-32-40-50-63mm are water-saving and efficient: small and uniform water droplets reduce evaporation and runoff, thereby improving water use efficiency.Low cost: The equipment investment and installation costs are lower than those of sprinkler or drip irrigation systems, making it suitable for large-scale promotion.Kenya has established multiple distribution warehouses, which can improve delivery efficiency and reduce transportation costs by delivering goods nearby.