When PM2.5 concentrations exceed WHO limits in 90% of urban areas globally, can traditional HVAC systems truly protect occupants? The emergence of F7 grade particulate filters answers this urgent challenge through 85-90% efficiency in capturing 0.3-10μm particles – from pollen to combustion byproducts.
Did you know 53 million metric tons of electronic waste flooded landfills last year? As global consumption of electrical devices accelerates, Waste Electrical and Electronic Equipment (WEEE) directives face unprecedented challenges. Why do 80% of discarded smartphones still end up in developing nations' dump sites despite existing regulations?
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