| 6. What is the serial number? |
For the convenience of data management or check, the accumulated numbers starting from "1" (or 001, 0001 depending on their coding) are a series of continuous and non repetitive numbers. |

| 6. What is the serial number? |
For the convenience of data management or check, the accumulated numbers starting from "1" (or 001, 0001 depending on their coding) are a series of continuous and non repetitive numbers. |
