What does class II filing 68 mean

The number in the scope of the second class. "Supervision and management of medical devices business approach" in Article IV of the first class of medical devices do not require licensing and filing, the operation of the second class of medical devices to implement the record management, the operation of the third class of medical devices to implement the management of licensing. 68 is the scope of the second class of the number of codes in the first two, for example, 6815 injectable and puncture instruments, 6820 general diagnostic instruments, 6821 medical electronic instruments and equipment, 6822 medical Optical instruments and endoscopic equipment, 6823 medical ultrasound instruments and equipment and related equipment, 6824 medical laser instruments and equipment, 6825 medical high-frequency instruments and equipment, 6826 physical therapy and rehabilitation equipment, 6827 Chinese medicine devices.