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- 2016-11-01 13:41
- EC200M821 Air Ventilation Ventilation is the intentional movement of air from outside a building to the inside.Ventilat
- balance valve
- 2016-10-23 10:34
- Parametervalve bodymaterial:brass(Cu=57%)stem seal:EPDMmedium temperature:1...95degree Celsiusrated flow:1.2m3/h(more de