3 在线成人影欧美一区二区,美丽邻居bd在线播放中文

Constant-flow nipple imported

1.The flow rate does not change with pressure in the range of 0.2~6 bar;

2.Pigs drink more comfortably, with reduction in irritability;

3.Reduce the waste of water resources;

4.Reduce sewage discharge and cost.

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