and incorporated with bronzed surface. The bronze layer is sintered twice under
high temperature and calendered firmly onto the steel strip.
| Item | Alloy Type | Cu | Pb | Sn | Zn |
| SL800 | Cu80Pb10S10 | 80 | 10 | 10 | / |
| SL750 | Cu70Pb10 | 75 | 24 | 1 | / |
| SL720 | Cu75Pb22S3 | 72 | 24 | 4 | / |
| Place of Origin: | Zhejiang |
|---|

| Item | Alloy Type | Cu | Pb | Sn | Zn |
| SL800 | Cu80Pb10S10 | 80 | 10 | 10 | / |
| SL750 | Cu70Pb10 | 75 | 24 | 1 | / |
| SL720 | Cu75Pb22S3 | 72 | 24 | 4 | / |