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While aluminum foil Faraday bags provide essential protection, they have limitations. They are most effective against certain frequencies, particularly low-frequency fields. High-frequency signals may not be entirely blocked. Additionally, their construction can be prone to wear and damage, which can affect their shielding capabilities.

Safety is another essential factor when it comes to wheat flour packaging. The packaging must protect the flour from contaminants, pests, and moisture to minimize spoilage and ensure food safety. Food-grade materials are vital in this aspect, as they need to meet specific regulations to assure consumers that their food is packed in a safe environment.