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Patent certificate of a Bluetooth communication data encryption method, terminal and system for BLE

A Bluetooth authentication authorisation method and authorisation system patent certificate for BLE devices

Patent certificate of an automatic welding system, welding method and connection structure of welded products

A non-contact human body accurate temperature measurement method and temperature measurement device patent certificate

Patent certificate for a rapid centring device for machining cylindrical centre holes using hand-held power tools

Patent certificate of a kind of razor which is easy to clear chips