... 75% 3)Color: brown, green, black Evaporative cooling pad with first class quality, corrosion-resistant cooling pad, cooling system cooling pad with cooling fan ... 150mm, 200mm3. Shade rate of greenhouse: 50%, 65%, 75%4. Color: brown, green, black5. Ventilation volume in greenhouse: 225/ 195 ... seconds, 200mm/1.5hours, can achieve international standard.4)The product does not include chemicals which are ...