Photocatalyst Air Purifying Filters Market Size, By Product Type (Cotton-Based Filters, Aluminum-Based Filters, Nickel-Based Filters, Non-Woven Filters, Others), By Application (Industrial Exhaust Gas Treatment System, Air Conditioning/Fresh Air System, Air Purifier, Others), By Key Players (Air Oasis, Fujico, Samsung, Arcelik, Vitesy, BMB Technologies & Services, Compo Shenzhen Technology, Hamilton Thorne, Nikki-Universal, Dongguan Walson Environmental Purifying Technology, Boegger Industech, Shenzhen Zhenjing Technology), By Regional Outlook And Competitive Landscape