1984-1985 Deputy Director of Jinhuagong Mine of Datong Mining bureau.

1984- 1985大同矿务局晋华宫矿副矿长。

youdao

1982-1984 Deputy Director and Director of Ventilation District of Jinhuagong Mine of Datong Mining bureau.

1982- 1984大同矿务局晋华宫矿通风区副区长、区长。

youdao

1977-1982 Technician and Assistant Engineer of Ventilation District of Jinhuagong Mine of Datong Mining bureau.

1977- 1982大同矿务局晋华宫矿通风区技术员、助理工程师DatongMining bureau。

youdao

1977-1982 Technician and Assistant Engineer of Ventilation District of Jinhuagong Mine of Datong Mining bureau.

1977- 1982大同矿务局晋华宫矿通风区技术员、助理工程师DatongMining bureau。

youdao