In 1997, JSI was founded in Guiyang, China. In the same year, taphole drilling bits for blast furnaces and the semi-finished products were developed. In 1998, small hole rock drilling tools for the international market was developed.
In 1997, JSI was founded in Guiyang, China. In the same year, taphole drilling bits for blast furnaces and the semi-finished products were developed. In 1998, small hole rock drilling tools for the international market was developed.
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