The air pump is an air pump. It draws air into the storage area by pulling it, and then injects or supplements the air required by various tires and some balls by propulsion. Now the most common pump is made of stainless steel, mainly because stainless steel has strong oxidation resistance, long service life, not easy to rust, anti-corrosion, not easy to deform, lead-free safety, high hardness, wear resistance and other advantages, durable, Widely used in various balls, bicycles, motorcycles, etc.
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