In 2008, JSI was awarded “Guizhou famous export enterprise” by Economic and Trade Bureau of Guizhou province. 2011, JSI worked as the first drafter for “Heterosexual thread button bits” Chinese National rock drilling Standard.
In 2008, JSI was awarded “Guizhou famous export enterprise” by Economic and Trade Bureau of Guizhou province. 2011, JSI worked as the first drafter for “Heterosexual thread button bits” Chinese National rock drilling Standard.
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