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By certification 
we have our own factory and it locates in Gaoyi city , shijiazhuang city ,
hebei provice , China .
Appearance Black powder
grade Industrial level
Hydrochloric acid insoluble 0.1%max 0.06%
Ni 0.1%max 0.0048%
Fe 0.2%max 0.021%
hebei provice , China .
Appearance Black powder
grade Industrial level
Hydrochloric acid insoluble 0.1%max 0.06%
Ni 0.1%max 0.0048%
Fe 0.2%max 0.021%
