Can the hose of car heater bought online be used?

All the car heater tubes bought online can be used. The car heating water pipe bought online is the same as that of the car 4s shop. The function of the car warm water pipe is to provide warm air to the car when it is cold, to help remove the windshield and defrost. The warm water pipe is a pipe connecting the water tank circulation system and the heater. When the engine starts, the water temperature will rise and make a big cycle. The warm air pipe is directly connected to the water tank of the heater, and the water tank will have temperature and dissipate heat through the fan.