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EasyFong Patented Products|Authorized Sales Channels
This product series is protected by EasyFong patents.
Taiwan Utility Model Patent No. M673354
Customers are advised to purchase through EasyFong or officially authorized sales channels to ensure product authenticity, warranty registration, spare parts support, and after-sales service rights.
Products purchased from unauthorized sources, cross-region resale, or unclear origins may affect warranty eligibility and maintenance service support.
Ventilation principle and FAQ
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