特点：采用专利精钢门环弹簧，超强回弹力，坚固耐力。
Feature: Uses copyrighted chain spring with super bounce back and durable.
同时介质压力与上游端挠性结构的回弹力又增加了下游端阀座的密封。
While medium pressure and the upstream end of the resilient and flexible structures to increase the downstream end of the valve seat seal.
移印硅胶的特点是胶质细腻，没有颗粒，没有杂质，耐磨，回弹力好。
Pad printing silicon rubber requires to be exquisite, without granules or impurity, and has advantages of wearability and resilience.
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