Valve flap and valve seat for the soft seal, seal performance, no leakage.
阀瓣与阀座为软密封，密封性能好，无泄露。
High performance — Super absorbent, lock water and breathable, no leakage.
超高性能- - -超强吸水、超强锁水、绝无渗漏、超强透气。
High performance — Super absorbent, lock water and breathable, no leakage.
超高性能- - -超强吸水、超强锁水、绝无渗漏、超强透气。
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