

File download in progress. Please do not close this page, otherwise the download task will be cancelled.
1. First of all, buyers need to have skilled operation skills.
2. If you encounter a hard texture, it is really strenuous.
3. The electric drill uses a 5V voltage and the horsepower is small, which is normal.
Suggestion: Those who need professional diamond drilling cannot buy, and cannot drill pearls in batches.









