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TENSION_TENSIONASIA_Envelope_ Optical_Lens Envelope_packaging_automation

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    Current :home > Envelope > Security Envelopes

    Security Envelopes

    Patent No.

    ZL 02242497.0


    The bonding part of the upper cover is provided with anti-disassembly lines composed of intermittent tear lines.  

    At the edges is a three-step corn glue that will not come out of place even at high temperatures. 


    It is difficult to open letters easily after they are sealed and sealed;  If the upper cover is forcibly removed illegally, it will leave a tear mark on the anti-tear marks and around it, even if it is re-sealed, it will leave a mark.  

    Protect the recipient's personal information security, especially for bank credit card business and credit securities and other related industries.  


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