12.2.1 Please follow the instructions when opening the package.
12.2.2 After unpacking, please check the accessories and accompanying documentation in
accordance with the packing list, then start checking the device.
12.2.3 If the packing content does not meet the requirement or the device does not work properly,
please contact with our company immediately.
12.2.4 Please use the accessories provided by our company, otherwise the performance and
safety of the device may be affected. If accessories provided by other company need to be used,
please first consult the after-sales service of our company, or we will not responsible for any
12.2.5 The package shall be kept properly in case of using during regular maintenance or device