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1.Simple structure, small volume, large exhaust,our plant has been improved on the basis of the original,make the quick exhaust valve more perfect.
2.The qucik exhaust valve is used in the highest point of tube or the place where the air is closed to remove the gas of tube.
2.The qucik exhaust valve is used in the highest point of tube or the place where the air is closed to remove the gas of tube.