CFR shall keep the EDC Machines and its network equipments in good condition and will not move the EDC Machines from its position unless notifying to and agreeing with Posnet, and will take a good care of the EDC Machines. Posnet will provide onsite preventive maintenance four times a year to the EDC Machines installed at CFR stores to ensure uninterrupted business operations. Posnet has to submit the preventive plan to CFR at least one month in advance. The result of the preventive maintenance must be reported in proper time.