 |
 |
| 荣获部优产品奖 |
国际铅锌研究组织颁发的授权证书 |
| "Fine Quality" prize
honored by the Ministry of Agriculture of China in 1990. |
The rights granted by the international
Lead Zinc Research Organization,Inc |
国家煤炭工业安全标志办公室颁发的安全标志准用证书
ISO9001：2000质量管理体系认证证书
MA
Certificate of passing the authentication of ISO9001:2000
international standards