1. Product packaging and business to provide the instructions on whether the implementation of the standard number, marking the standard number for the gb17565-1998 door may be qualified anti-theft security door;
2. The upper left corner of the gatekeeper or the upper corner of the door hinge is marked with the text of security level anti-theft door;
3. See the installation workers to move the door when the degree of effort, the real anti-theft door are above 50kg, moderate physical man moving up very laborious.
4. Do not forget to ask for invoices, invoices should be indicated whether the anti-theft door, in order to safeguard rights.