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The Towable Potable Water Service Truck is a self-propelled special ground equipment at the airport that provides clean drinking water for aircraft through on-board equipment. The water tank is made of high-quality food-grade stainless steel plates and is firmly welded by argon arc welding. High-quality food-grade stainless steel water pumps are used. Filters are configured to ensure safer water quality. Water level displays and flowmeters are configured to make operations simpler and more convenient. According to customer needs, a heating inner tank insulated water tank, which is the first of its kind in China, can be configured.