1. According to the symbol to be posted, find the corresponding serial number in the correspondence table, and then find the corresponding posted package. 2. Squeeze an appropriate amount of drilling mud into the drill bit. 3. Stick the drill on the canvas of the corresponding symbol. 4. Pay attention to how much transparent film must be posted. 5. Remember to use the book to compact each place where the drill is stuck. 80% of the drills are dropped because there is no tight fit. 6. In order to ensure the firmness of the drill, the drill is rolled outwards during storage to prevent the drill from being squeezed out and then mounted.
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