QUALIFICATION  1.Product feature It is Polypropiline net waved by high-tech machine from abroad. 2.Produced from raw materials Produced from "A" grade plastic thread 3.Special qualification Coated by special substance preventing Bacteria and Fungus 4.Ventilation Many small square-shape holes originate good ventilation. 5.No need to often times remove for cleaning because it can filter dust in long time due to durable & strong plastic net. #Produkanda kategori filter AHU#