Lead Letter
2018-4-20
| Name | Model | Specification |
| Magnetic Lead No & Letter | Medium | 7*4*1 |
| Ordinary Lead No & Letter | Medium | 7*4*1 |
| Ordinary Lead No & Letter | Large | 13*9*2 |
| Ordinary Lead No & Letter | Small | 5*3*0.8 |
| Large B | Large | 13*9*1.6 |
| Lead Number | 9 |
| Name | Model | Specification |
| Magnetic Lead No & Letter | Medium | 7*4*1 |
| Ordinary Lead No & Letter | Medium | 7*4*1 |
| Ordinary Lead No & Letter | Large | 13*9*2 |
| Ordinary Lead No & Letter | Small | 5*3*0.8 |
| Large B | Large | 13*9*1.6 |
| Lead Number | 9 |