- protection fee ? why ? - protect you from little asshole like us -保护费?为什么? -保护不受我们这样的小混混的欺负啊
2.
Protection fee ? why ? - protect you from little asshole like us -保护费?为什么? -保护不受我们这样的小混混的欺负啊
3.
The wedge disc of the valve with flow guide hole is always fitted with the sealing face whether in full open or full close status to have the sealing face protected without being directly eroded by the medium so as to extend the duration 带导流孔阀门的闸板，无论是全开或是全关始终与密封面吻合，密封面得到保护不受介质直接冲刷，从而延长使用寿命。
