... with first class quality, corrosion-resistant cooling pad, cooling system cooling pad with cooling fan for Industry workshops, greenhouse, ... green, black5. Ventilation volume in greenhouse: 225/ 195/ 180m2/h6. The best cooling system manufacturer in ChinaCharacteristic of Gongle cooling pad1) ... pervasion, lasting effectiveness, a piece of water can diffuse in 4-5 seconds, height of absorb water,60-70mm ...